Provided by: hylafax-server_6.0.6-6_amd64 bug

NAME

       hfaxd - HylaFAX client-server protocol server

SYNOPSIS

       /usr/sbin/hfaxd [ -d ] [ -q dir ] [ -o port ] [ -O ] [ -l bindaddress ] [ -i port ] [ -I ]
       [ -s port ] [ -S ]

DESCRIPTION

       hfaxd is the HylaFAX program that implements the server portion of:

       ·  the client-server protocol and

       ·  the Simple Network Paging Protocol (SNPP) used to submit  message  pager  jobs  to  the
          IXO/TAP and UCP support.

       Additional client-server protocols are planned and hfaxd is intended to be the ``carrier''
       through which they are supported.

       hfaxd is typically used in one of two ways; either as a standalone process that is started
       at  system  boot time to listen for client connections on one or more ports (in which case
       the -i, -o, or -s option must be used), or  as  a  subservient  process  to  the  inetd(8)
       program.   The two forms of use may however be combined so long as the same service is not
       provided both by the standalone hfaxd and through inetd.

HYLAFAX (NEW) CLIENT-SERVER PROTOCOL SUPPORT

       If hfaxd is started with the -i option it will service clients using the  HylaFAX  client-
       server protocol.  This protocol is strongly related to the Internet File Transfer Protocol
       (FTP); so much so in fact that FTP client  programs  that  include  support  for  ``quoted
       commands''  may be used to communicate with hfaxd using the new protocol.  (It should also
       be possible to use FTP-aware World Wide Web browsers such as Mosaic and Netscape Navigator
       to access HylaFAX servers through the new protocol; but the current format for information
       returned in directory listings confuses them.)

       The hfaxd server currently  recognizes  the  following  protocol  requests;  case  is  not
       distinguished.   Entries  marked with a ¹ can be used only when the client has established
       administrative privileges with ADMIN.

       Request         Description
       ABOR            abort previous command
       ACCT            specify account (ignored)
       ADMIN           specify password for administrative privileges
       ALLO            allocate storage (vacuously)
       ANSWER¹         request that call be answered
       APPE            append to a file
       CDUP            change to parent of current working directory
       CHMOD           change mode of a file
       CHOWN¹          change owner of a file
       CWD             change working directory
       DELE            delete a file
       DISABLE¹        disable outbound use of modem
       ENABLE¹         enable outbound use of modem
       HELP            give help information
       FILEFMT         specify/query format for returning file status
       FILESORTFMT     specify/query format for sorting file status listing
       FORM            specify data transfer format
       IDLE            set idle-timer (in seconds)
       JDELE           delete done or suspended job
       JINTR           interrupt job
       JKILL           kill job
       JNEW            create new job
       JOB             set/query current job
       JOBFMT          specify/query format for returning job status
       JOBSORTFMT      specify/query format for sorting job status listing
       JPARM           specify/query job state parameter
       JREST           reset current job state
       JSUBM           submit job to scheduler
       JSUSP           suspend job from scheduling
       JWAIT           wait for job to complete
       JGDELE          delete group of jobs
       JGKILL          kill group of jobs
       JGINTR          interrupt group of jobs
       JGNEW           place current job in a new job group
       JGPARM          set state parameter in a group of jobs
       JGREST          reset current state for a group of jobs
       JGRP            set/query current job group
       JGSUBM          submit group of jobs to scheduler
       JGSUSP          suspend group of jobs from scheduling
       JGWAIT          wait for group of jobs to complete
       LIST            list files in a directory
       MDTM            show last modification time of file
       MODE            specify data transfer mode
       MDMFMT          specify/query format for returning modem status
       MDMSORTFMT      specify/query format for sorting modem status listing
       NLST            give name list of files in directory
       NOOP            do nothing
       PASS            specify password
       PASV            prepare for server-to-server transfer
       PORT            specify data connection port
       PWD             print the current working directory
       QUIT            terminate session
       RCVFMT          specify/query format for returning received facsimile status
       RCVSORTFMT      specify/query format for sorting received facsimile status listing
       REIN            reinitiate server state
       REST            restart incomplete transfer
       RETP            retrieve the next page in a file
       RETR            retrieve a file
       SHUT            schedule server shutdown
       SITE            non-standard commands (see next section)
       SIZE            return size of file
       STAT            return status of server or file
       STOR            store a file
       STOT            store a temporary file with a unique name
       STOU            store a file with a unique name
       STRU            specify data transfer structure
       SYST            show operating system type of server system
       TYPE            specify data transfer type
       TZONE           specify timezone handling for dates and times
       USER            specify user name
       VRFY            verify dialstring handling and/or least-cost routing

       The following non-standard  or  experimental  commands  are  supported  through  the  SITE
       request.

       Request          Description
       ADDMODEM¹        add/configure new modem for use
       ADDUSER¹         add client access control entry
       CONFIG¹          send configuration parameter setting to server
       DELMODEM¹        deconfigure/remove modem
       DELUSER¹         remove client access control entry
       TRIGGER          register realtime event trigger
       HELP             give help information, e.g., SITE HELP

       In  addition  FTP  requests that are specified in Internet RFC 959 but not listed here are
       recognized, but not implemented.

       The hfaxd server will abort an active data transfer only when the ABOR command is preceded
       by  a  Telnet  "Interrupt  Process" (IP) signal and a Telnet "Synch" signal in the command
       Telnet stream, as described in Internet RFC 959.  If a STAT command is received  during  a
       data transfer, preceded by a Telnet IP and Synch, transfer status will be returned.

SIMPLE NETWORK PAGING PROTOCOL (SNPP) SUPPORT

       If  hfaxd  is  started with the -s option it will service clients using the Simple Network
       Pager Protocol (SNPP) as specified in RFC 1861 (which obsoletes RFC 1645).

       The hfaxd server currently recognizes the SNPP protocol requests listed  below.   Requests
       marked  with a ¹ are non-standard extensions to RFC 1861 that may be added to SNPP at some
       future time.  Case is not distinguished and only the first four characters of requests are
       used in identifying commands.

       Request      Description
       2WAY         preface a 2-way transaction
       ABOR¹        abort previous command
       ACKR         set read acknowledgement handling for subsequent requests
       ALER         set the alter-level for subsequent requests
       CALL         set the caller-ID for subsequent requests
       COVE         set the alternate coverage area for subsequent requests
       DATA         specify a multi-line message
       EXPT         set the expiration time for subsequent requests
       HELP         give help information
       HOLD         set the time at which subsequent requests are to be delivered
       KTAG         kill a previously submitted request
       LEVE         set the service level for subsequent requests
       LOGI         login to server
       MCRE         specify multiple response text and code
       MESS         specify a single-line message
       MSTA         return the status of a previously submitted request
       NOQU         disable message queueing
       PAGE         specify the destination pager
       PING         locate/validate a pager
       QUIT         terminate session
       RESE         reset server state
       RTYP         set the reply type code for subsequent requests
       SEND         send message(s)
       SITE¹        site-specific commands (see next section)
       STAT¹        return server status
       SUBJ         set the message text for subsequent requests

       The hfaxd server will abort an active SEND operation when an ABOR command is preceded by a
       Telnet "Interrupt Process" (IP) signal and a Telnet "Synch" signal in the  command  Telnet
       stream.

       The  following  non-standard  or experimental commands are also supported through the SITE
       request.

       Request        Description
       FROMUSER       specify the sender's identity
       IDLE           set idle-timer (in seconds)
       JPARM          query job parameter status
       JQUEUE         control whether or not job is queued
       LASTTIME       set the time to terminate an unfinished job
       MAILADDR       set the e-mail address to use for notification
       MAXDIALS       set the maximum number of times to dial the phone
       MAXTRIES       set the maximum number of times to try sending the page
       MODEM          set the modem or class of modems to use
       NOTIFY         set the e-mail notification
       RETRYTIME      set the time to delay between job retries
       SCHEDPRI       set the scheduling priority for the job
       HELP           give help information, e.g., SITE HELP

       Note that hfaxd requires that SNPP clients login first with the LOGI directive  while  RFC
       1861 permits clients to submit pages anonymously.

CLIENT ACCESS CONTROL

       hfaxd    controls   client   access   according   to   the   information   in   the   file
       /var/spool/hylafax/etc/hosts.hfaxd.  This file defines the set of users and machines  that
       may  receive service and, optionally, defines password challenges to use in authenticating
       clients.  Clients may  be  permitted  access  to  services  with  or  without  a  password
       challenge.   Access  may  also  be restricted based on the host machine that a request for
       service originates from.  Consult hosts.hfaxd(5) for information on the format and content
       of  this  file.   The  SITE ADDUSER protocol request is provided for adding new users to a
       server (available only to clients with administrative privileges).

       Server resources are controlled based on clients' identities.  Jobs  and  documents,  both
       received  and  submitted,  are  protected  by the server.  Typically clients are permitted
       access to anything they own or that is publicly accessible.  There are also administrative
       privileges  that  clients  may  acquire  and which permit them wide access to objects that
       reside on the server.

       A complete client-server protocol specification is still outstanding.

       hfaxd operates with its root directory set to  the  top  of  the  HylaFAX  spooling  area;
       /var/spool/hylafax.   This  is  done  so that clients see a virtual file hierarchy that is
       completely contained within the HylaFAX  operating  environment  on  the  server  machine.
       Administrators  however  must  be  aware of this action when specifying files in the hfaxd
       configuration file: absolute pathnames relative to the root of the spooling should be used
       to specify filenames.

SERVER ACCESS CONTROL

       The  file /var/spool/hylafax/etc/shutdown, when present, specifies when to restrict access
       to a server machine.  When this file is present and contains valid information hfaxd  will
       permit  only  users  with administrative privileges to access the server.  Any other users
       that request service will be denied access and negative server responses will include  any
       shutdown  message  specified  in  the  shutdown  file.   Consult  hylafax-shutdown(5)  for
       information on the format and content of this file.

       The SHUT protocol request can be used to schedule a server shutdown; it is available  only
       to  clients with administrative privileges.  To make a shutdown server available again the
       shutdown file can be deleted with the DELE protocol request (this is to be  replaced  with
       an  ``unshut''  protocol  request  so  that  implementation  details  are  not part of the
       protocol).

CONFIGURATION FILES

       hfaxd reads configuration information from the file /etc/hylafax/hfaxd.conf  each  time  a
       new  server  process  is  started  (i.e.  for  each  new client).  This file uses the same
       conventions used by other HylaFAX configuration files; as described in  hylafax-config(5).
       The  following  configuration  parameters are recognized; items marked ``(SNPP)'' are used
       only by the SNPP support.
       Tag                      Type       Default                             Description
       AllowSortFormat          boolean    true                                Allow client to request sorting formats
       FaxContact               string     see below                           contact address to show in help text
       FileFmt                  string     see below                           format string for file status results
       FileSortFmt              string     -                                   format string for sorting file status listing
       IdleTimeout              integer    900                                 client idle timeout in seconds
       JobFmt                   string     see below                           format string for job status results
       JobSortFmt               string     -                                   format string for sorting job status listing
       JobProtection            octal      0444                                permissions for job qfiles in sendq/doneq
       KillTimeMap              string     see below                           mapping from service level to job kill time (SNPP)
       LogFacility              string     daemon                              syslog facility name for tracing messages
       MaxAdminAttempts         integer    5                                   maximum admin attempts before disconnecting
       MaxConsecutiveBadCmds    integer    10                                  maximum invalid commands before disconnecting
       MaxIdleTimeout           integer    7200                                maximum client idle timeout permitted
       MaxLoginAttempts         integer    5                                   maximum login attempts before disconnecting
       MaxMsgLength             integer    128                                 maximum pager message length (SNPP)
       ModemFmt                 string     see below                           format string for modem status results
       ModemSortFmt             string     -                                   format string for sorting modem status listing
       PagerIDMapFile           string     /var/spool/hylafax/etc/pagermap     name of file for mapping pager IDs (SNPP)
       PriorityMap              string     see below                           mapping from service level to job priority (SNPP)
       PublicJobQ               boolean    true                                Allow public listing access to the sendq/doneq
       PublicRecvQ              boolean    true                                Allow public listing access to the recvq
       RcvFmt                   string     see below                           format string for received facsimile status results
       RcvSortFmt               string     -                                   format string for sorting received facsimile status results listing
       RetryTimeMap             string     see below                           mapping from service level to job retry time (SNPP)
       ServerTracing            integer    1                                   server tracing control vector
       ShutdownFile             string     /var/spool/hylafax/etc/shutdown     name of shutdown control file
       UserAccessFile           string     /var/spool/hylafax/etc/hosts.hfaxd  name of access control file
       XferLogFile              string     /var/spool/hylafax/etc/clientlog    name of file for logging client data transfers

       The configuration parameters are explained below:

       AllowSortFormat
                 This controls whether the server accept the *SORTFMT commands which  the  client
                 issues to change the server sort the listings.

       FaxContact
                 The e-mail address to display as a point of contact in the help text returned to
                 a client in response to the HELP or SITE HELP  commands.   By  default  this  is
                 ``FaxMaster@hostname'',  where  hostname  is  the  fully  qualified name for the
                 machine where the server is running.

       FileFmt   The format string to use when returning file status information  with  the  LIST
                 and STAT commands.  Formats are specified using printf(3S) style conventions but
                 using the field identifiers listed below.  Each item can  include  field  width,
                 precision, left-justification, 0-filling, etc. just as for printf; e.g. %-8p for
                 an 8-character wide, left-justified,  blank-padded  field  containing  the  file
                 protection flags.

                 Format    Description
                 a         Last access time
                 c         Creation time
                 d         Device number (octal)
                 f         Filename
                 g         Group identifier (decimal)
                 i         Inode number (decimal)
                 l         Link count (decimal)
                 m         Last modification time
                 o         Owner (based on file GID)
                 p         Fax-style protection flags (no group bits)
                 q         UNIX-style protection flags
                 r         Root device number (octal)
                 s         File size in bytes (decimal)
                 u         User identifier (decimal)

                 The  default  format  string  is  ``%-7p  %3l  %8o  %8s %-12.12m %.48f''.  It is
                 recommended that all items include a field width  so  that  client  applications
                 that  construct headers from the format string can constrain the width of column
                 title strings.

       FileSortFmt
                 The format string to use when sorting the listing for directories using the LIST
                 command.  Follows the FileFmt formatting rules.

       IdleTimeout
                 The  initial/default  timeout  to  use  in  timing out idle clients.  This value
                 defines the maximum amount of time (in seconds)  that  hfaxd  will  wait  for  a
                 command  from  a client before terminating the connection.  Unprivileged clients
                 may alter the idle timeout up to the value of MaxIdleTimeout; privileged clients
                 may set the timeout to any value.

       JobFmt    The  format  string to use when returning job status information for jobs in the
                 sendq and doneq directories.   Formats  are  specified  using  printf(3S)  style
                 conventions but using the field identifiers listed below.  Each item can include
                 field width, precision, left-justification, 0-filling, etc. just as for  printf;
                 e.g.  %-3j for a 3-character wide, left-justified, blank-padded field containing
                 the job state.

                 Format    Description
                 A         Destination SubAddress
                 B         Destination Password
                 C         Destination company name
                 D         Total # dials/maximum # dials
                 E         Desired signalling rate
                 F         Client-specific tagline format string
                 G         Desired min-scanline time
                 H         Desired data format
                 I         Client-specified scheduling priority
                 J         Client-specified job tag string
                 K         Desired use of ECM
                 L         Destination geographic location
                 M         Notification e-mail address
                 N         Desired use of private tagline (one-character symbol)
                 O         Whether to use continuation cover page (one-character symbol)
                 P         # pages transmitted/total # pages to transmit
                 Q         Client-specified minimum acceptable signalling rate
                 R         Destination person (receiver)
                 S         Sender's identity
                 T         Total # tries/maximum # tries
                 U         Page chopping threshold (inches)
                 V         Job done operation
                 W         Communication identifier
                 X         Job type (one-character symbol)
                 Y         Scheduled date and time
                 Z         Scheduled time in seconds since the UNIX epoch
                 a         Job state (one-character symbol)
                 b         # consecutive failed tries
                 c         Client machine name
                 d         Total # dials
                 e         Public (external) format of dialstring
                 f         # consecutive failed dials
                 g         Group identifier
                 h         Page chop handling (one-character symbol)
                 i         Current scheduling priority
                 j         Job identifier
                 k         Job kill time
                 l         Page length in mm
                 m         Assigned modem
                 n         E-mail notification handling (one-character symbol)
                 o         Job owner
                 p         # pages transmitted
                 q         Job retry time (MM::SS)
                 r         Document resolution in lines/inch
                 s         Job status information from last failure
                 t         Total # tries attempted
                 u         Maximum # tries
                 v         Client-specified dialstring
                 w         Page width in mm
                 x         Maximum # dials
                 y         Total # pages to transmit
                 z         Time to send job

                 The default format string is ``%-4j %3i %1a %6.6o %-12.12e %5P %5D %7z  %.25s''.
                 This  string  constrains  each status line to be less than 80 characters.  It is
                 recommended that all items include a field width so  that  client  applications,
                 such  as  faxstat(1) that construct headers from the format string can constrain
                 the width of column title strings.

       JobSortFmt
                 The format string to use when sorting the listing for  jobs  in  the  sendq  and
                 doneq directories.  Follows the JobFmt formatting rules.

       JobProtection
                 The  file  mode  setting for job qfiles in the HylaFAX queues (sendq and doneq).
                 The default setting of ``0644'' allows all users to view all job  parameters  in
                 the  send/done  queues.   If  PublicJobQ  is  set  to false, then this file mode
                 determines the permissions of the clients to see the jobs, following the HylaFAX
                 permission  model  of  the  group bits controlling uid permissions and the other
                 bits controlling other permissions.

       KillTimeMap
                 The mapping from SNPP service level (0-11) to job expiration time  (kill  time).
                 A mapping is specified as a string of space-separate numbers where each value is
                 the number of minutes to permit a job to run.  The default mapping is ``5 5 5 15
                 60  240  720  1440  1440  1440  1440 1440'' which expires a job in 5 minutes for
                 service levels 0-2, 15 minutes for level three, 60 minutes for level four, etc.

       LogFacility
                 The symbolic name for the syslog(3) facility to use when logging error  messages
                 and   informational/debugging   messages  requested  through  the  ServerTracing
                 parameter.  The list of facility names is  found  in  the  system  include  file
                 <syslog.h>; comparisons are case-insensitive.

       MaxAdminAttempts
                 The  maximum number of unsuccessful attempts gain administrative privileges with
                 the ADMIN command that  hfaxd  will  permit  a  client  before  terminating  the
                 connection.   Note  that  the  count  of  attempts  is  reset if/when the client
                 successfully gains administrative privileges.

       MaxConsecutiveBadCmds
                 The maximum number of  consecutive  unrecognized,  unimplemented,  syntactically
                 incorrect,  or  otherwise  unacceptable  commands  to  permit  a  client  before
                 terminating the connection.  This control has two purposes: to handle  naive  or
                 malicious  clients  from  sending long streams of nonsense commands to a server,
                 and to insure that clients are forcibly  terminated  when  a  server  is  marked
                 shutdown.

       MaxIdleTimeout
                 The  maximum value that a client may set the idle timeout to.  This value is not
                 enforced if the client has administrative privileges.

       MaxLoginAttempts
                 The maximum number of unsuccessful attempts to login  with  the  USER  and  PASS
                 commands that hfaxd will permit a client before terminating the connection.

       MaxMsgLength
                 The maximum number of characters to accept in a pager message specified with the
                 DATA or MESS commands.  Messages longer than this value are rejected.

       ModemFmt  The format string to use when returning  modem  status  information  for  modems
                 listed  in  the  status directory.  Formats are specified using printf(3S) style
                 conventions but using the field identifiers listed below.  Each item can include
                 field  width, precision, left-justification, 0-filling, etc. just as for printf;
                 e.g. %-8h for an 8-character wide, left-justified, blank-padded field containing
                 the name of the host the server is running on.

                 Format    Description
                 h         Server hostname
                 l         Local identifier string
                 m         Canonical modem name
                 n         FAX phone number
                 r         Maximum pages that can be received in a single call
                 s         Status information string
                 t         Server and session tracing levels (xxxxx:yyyyy)
                 v         Modem speaker volume as one-character symbol
                 z         A ``*'' if a faxgetty(8) process is running; otherwise `` '' (space)

                 The default format string is ``Modem %m (%n): %s''.

       ModemSortFmt
                 The  format string to use when sorting the listsin for  modem status information
                 in the status directory.

       PagerIDMapFile
                 The absolute pathname of the file that contains  directions  for  mapping  pager
                 identifiers  to  IXO/TAP  or  UCP  service  providers  (and  optionally  a pager
                 identification number).  Consult pagermap(5) for information on the  format  and
                 content of this file.  (Note that absolute pathnames are relative to the root of
                 the spooling area).

       PriorityMap
                 The mapping from SNPP service  level  (0-11)  to  job  scheduling  priority.   A
                 mapping  is  specified as a string of space-separate numbers where each value is
                 the priority to assign to a job.  The default mapping is ``63 127  127  127  127
                 127  127  127  127  127 127 127'' which assigns a high priority to service level
                 zero and normal (default) priority to all other service levels.

       PublicJobQ
                 By default, HylaFAX has always made the listings of the sendq/doneq include  all
                 jobs  to  any  client  connected to hfaxd.  By setting this to false, hfaxd will
                 also enforce it's normal access restrictions on  the  listing  of  jobs  in  the
                 sendq/doneq.   These  access  restrictions  are  based  on  the  file  mode (see
                 JobProtection ) and the logged in uid (see hosts.hfaxd )

       PublicRecvQ
                 By default, HylaFAX has always made the listings of the recvq include all  faxes
                 to  any  client  connected  to hfaxd.  By setting this to false, hfaxd will also
                 enforce it's normal access restrictions on the listing of faxes  in  the  recvq.
                 These  access restrictions are based on the file mode faxgetty (and it's related
                 FaxDispatch ) set for the fax, and the logged in uid (see hosts.hfaxd )

       RcvFmt    The format  string  to  use  when  returning  status  information  for  received
                 facsimile  in the recvq directory.  Formats are specified using printf(3S) style
                 conventions but using the field identifiers listed below.  Each item can include
                 field  width, precision, left-justification, 0-filling, etc. just as for printf;
                 e.g. %-3b for a 3-character wide, left-justified, blank-padded field  containing
                 the signalling rate.

                 Format    Description
                 a         SubAddress received from sender (if any)
                 b         Signalling rate used during receive
                 d         Data format used during receive
                 e         Error description if an error occurred during receive
                 f         Document filename (relative to the recvq directory)
                 h         Time spent receiving document (HH:MM:SS)
                 l         Page length in mm
                 m         Fax-style protection mode string (``-rwxrwx'')
                 n         File size (number of bytes)
                 o         File owner
                 p         Number of pages in document
                 q         UNIX-style protection flags
                 r         Resolution of received data
                 s         Sender identity (TSI)
                 t         Compact representation of the time when the receive happened
                 w         Page width in mm
                 z         A ``*'' if receive is going on; otherwise `` '' (space)

                 The default format string is ``%-7m %4p%1z %-8.8o %14.14s %7t %f''.  This string
                 constrains each status line to be less than 80 characters.   It  is  recommended
                 that  all  items  include  a  field  width  so that client applications, such as
                 faxstat(1) that construct headers from the format string can constrain the width
                 of column title strings.

       RcvSortFmt
                 The  format string to use when sorting the listing for received facsimile in the
                 recvq directory.  Follows the RcvFmt formatting rules.

       RetryTimeMap
                 The mapping from SNPP service level (0-11) to job  retry  time.   A  mapping  is
                 specified  as  a string of space-separate numbers where each value is the number
                 of seconds to delay between delivery attempts.  A value of zero  causes  retries
                 to  be  scheduled using the default algorithm used by the HylaFAX job scheduler.
                 The default mapping is ``30 60 60 180 0 0 0 0 0 0 0 0'' which retries a level  0
                 job  after  a  30 second delay, levels 1 and 2 after 60 seconds, level 3 after 3
                 minutes, and other jobs are retried according to the usual scheduling algorithm.

       ServerTracing
                 A number that controls the generation of tracing information by a server.  areas
                 that  are  individually  controlled.   To  enable  tracing  of multiple areas of
                 operation, the flag associated with each area should be  bit-or'd  to  form  the
                 value for this tag.
                 Flag             Description
                 1 (0x00001)      General server operation
                 2 (0x00002)      Client-server protocol requests and responses
                 4 (0x00004)      File transfers from client to server
                 8 (0x00008)      File transfers from server to client
                 16 (0x00010)     Client logins
                 32 (0x00020)     All network connections
                 64 (0x00040)     FIFO messages to and from faxq(8)
                 128 (0x00080)    TIFF Library errors and warnings
                 256 (0x00100)    Configuration file processing

                 Tracing messages are directed to syslog(3) using the facility specified with the
                 LogFacility configuration parameter.  Note that syslogd(8) must be configured to
                 capture   facility.info,   facility.debug,  facility.warning,  and  facility.err
                 messages.

       ShutdownFile
                 The absolute pathname of the server shutdown file; see  hylafax-shutdown(5)  for
                 information  on  the  format  and  content  of  this  file.  (Note that absolute
                 pathnames are relative to the root of the spooling area).

       UserAccessFile
                 The absolute pathname of the user access control file;  see  hosts.hfaxd(5)  for
                 information  on  the  format  and  content  of  this  file.  (Note that absolute
                 pathnames are relative to the root of the spooling area).

       XferLogFile
                 The absolute pathname  of  the  file  to  use  for  logging  client-server  file
                 transfers  (when  enabled  through  the  ServerTracing  parameter).   (Note that
                 absolute pathnames are relative to the root of the spooling area).

OPTIONS

       -q dir    The specified directory is treated as the spooling area.  The  default  spooling
                 area, /var/spool/hylafax, is defined at the time the software is built.

       -d        Stop  hfaxd from detaching itself from the controlling terminal.  This option is
                 normally used only when running hfaxd under a debugger or when hfaxd is  started
                 up from the inetd(8) process.

       -l bindaddress
                 Bind  to  the specified bindaddress the tcp port. Please note that this argument
                 need to be specified before the -i  otherwise  it  will  be  ignored.  A  better
                 approach  to  improve  security  would  be to run hfaxd from xinetd, binding its
                 service to the specific port. This will also  make  hylafax  benefits  from  tcp
                 wrappers and other options provided by xinetd.

       -i port   Listen  on  the specified port for service requests and respond with the client-
                 server  protocol.   The  port  may  be  specified  either   symbolically,   e.g.
                 ``hylafax''  or  numerically.   This  flag  may  be  specified multiple times to
                 request service on multiple different ports.  Each time this flag is  specified,
                 it  will  listen  on  the  specified  port,  bound  to  the  last -l bindaddress
                 specified.  If no -l bindaddress was specified,  it  will  bind  to  the  system
                 configured  default  wildcard  address,  which could be any of IPv6, or IPv4, or
                 both.

       -s port   Listen on the specified port for service requests and respond  with  the  Simple
                 Network  Paging (SNPP) protocol.  The port may be specified either symbolically,
                 e.g. ``snpp'' or numerically.  This flag may  be  specified  multiple  times  to
                 request service on multiple different ports.

       -I        Service  the  client-server  protocol using the standard input and output.  This
                 option is useful when hfaxd is started up by inetd(8).

       -S        Service the Simple Network Paging (SNPP) protocol using the standard  input  and
                 output.  This option is useful when hfaxd is started up by inetd(8).

DIAGNOSTICS

       Diagnostics generated by hfaxd are logged using syslog(3).

FILES

       /etc/hylafax/hfaxd.conf             server configuration file
       /var/spool/hylafax                  spooling area
       /var/spool/hylafax/FIFO             for submitting the job
       /var/spool/hylafax/sendq            where job description is placed
       /var/spool/hylafax/sendq/seqf       for assigning job identifiers
       /var/spool/hylafax/docq/seqf        for assigning document identifiers
       /var/spool/hylafax/tmp              temporary location of job-related files
       /var/spool/hylafax/docq             where document files are placed
       /var/spool/hylafax/recvq            where received facsimile are found
       /var/spool/hylafax/archive          where archived jobs are placed
       /var/spool/hylafax/log              for server log files
       /var/spool/hylafax/client           for FIFO files used in communicating with faxq
       /var/spool/hylafax/status           for server status information
       /var/spool/hylafax/config.device    for returning server status
       /var/spool/hylafax/etc/hosts.hfaxd  host access control list
       /var/spool/hylafax/etc/shutdown     server shutdown control
       /var/spool/hylafax/etc/pagermap     SNPP pager ID mapping file

BUGS

       To be filled in.

SEE ALSO

       sendfax(1),  sendpage(1),  faxalter(1),  faxrm(1), faxstat(1), faxq(8), syslog(3) hylafax-
       server(5), hosts.hfaxd(5), status(5), hylafax-shutdown(5),

                                          July 12, 1996                                  HFAXD(8)