Provided by: nullmailer_2.2-3build1_amd64 bug


       nullmailer-send - Send queued messages




       This  program  is responsible for coordinating the transmission of messages that have been
       queued by nullmailer-queue.  It uses a variety of protocol modules to deliver the messages
       from the queue to remote "smart" servers.

       When  the  program  starts, the queue is scanned to build a list of messages to send.  The
       queue is rescanned when either the trigger is pulled,  or  after  pausetime  seconds  have
       elapsed  after  the  last  failed  delivery.   When  there  are  no messages in the queue,
       nullmailer does no rescanning until the trigger is pulled.  Pulling the  trigger  consists
       of  opening  up  the trigger named pipe and writing a single byte to it, which causes this
       program to be awakened (if it's not already processing the queue).  This procedure is done
       by  nullmailer-queue  to  ensure  that  messages are delivered immediately.  You can start
       delivery by hand from the command line like this:

           echo 1 > trigger

       Delivery of messages consists of reading the list of remote servers  and  then  trying  to
       deliver  the messages to these servers as follows.  For each remote in the list, the named
       protocol handler is executed once for  each  message  remaining  in  the  queue.   If  the
       protocol  handler succeeds, the message is removed from the queue and processing continues
       with the next message.  If the protocol handler reports a permanent failure or the message
       has  been  in  the  queue  longer than queuelifetime, the message is moved into the failed
       queue and a bounce message is generated with nullmailer-dsn.  If any  messages  remain  in
       the  queue, processing of the remaining messages continues with the next remote.  When all
       the remotes have been tried, nullmailer-send sleeps for a number of seconds  specified  by
       pausetime before retrying sending the contents of the queue.


       All the control files are reread each time the queue is run.

              Sets  the  environment variable $HELOHOST which is used by the SMTP protocol module
              to set the parameter given to the HELO command.  Defaults to the value  of  the  me
              configuration file.

              The  maximum  time to pause between successive queue runs, in seconds.  Defaults to
              24 hours (86400).

              The minimum time to pause between successive queue runs when there are messages  in
              the  queue,  in  seconds.   Defaults  to  1 minute (60).  Each time this timeout is
              reached, the timeout is doubled to a maximum of maxpause.  After new  messages  are
              injected,  the  timeout  is  reset.  If this is set to 0, nullmailer-send will exit
              immediately after going through the queue once (one-shot mode).

              The maximum time a message is allowed to live in the queue before being  considered
              permanently failed, in seconds. Defaults to 7 days (604800).

              This  file  contains  a list of remote servers to which to send each message.  Each
              line of this file contains a remote host name or address followed  by  an  optional
              protocol string, separated by white space.  The protocol name defaults to smtp, and
              may be followed by additional options for that module.  See the "PROTOCOL  OPTIONS"
              section  for  a  list  of  the  available  options.   The options may optionally be
              prefixed by -- but this is not required.  The line is parsed according to  standard
              shell quoting rules.  For example, to connect to port 2525 on your SMTP smart host,
              which also requires SMTP authentication, and initiate TLS with STARTTLS, use:

                  smarthost.dom smtp port=2525 starttls user=user pass='my pass phrase'

              Blank lines and lines starting with a pound (#) are ignored.

              The time to wait for a remote module listed above to  complete  sending  a  message
              before  killing  it  and  trying again, in seconds.  Defaults to 1 hour (3600).  If
              this is set to 0, nullmailer-send  will  wait  forever  for  messages  to  complete


              Set  an  alternate  port number to connect to on the remote host. For example, SMTP
              may use port=587 for the alternate SMTP "submission" port.

              Set the SMTP authentication user name.

              Set the SMTP authentication password.

              Set the source address for connections to the remote host.

              Force SMTP "AUTH LOGIN" mode instead of auto-detecting.

       tls    Connect using TLS.  This will automatically switch the default port to 465.

       ssl    Alias for the tls option for compatibility.

              Use the STARTTLS command to initiate a TLS session.

              Set the filename for a TLS client certificate to send to the server.

              Set the filename for the private key for a TLS client certificate.  Defaults to the
              same file name as x509certfile.

              Set  the  TLS  certificate authority trust filename. Defaults to /etc/ssl/certs/ca-

              Set the TLS certificate revocation list filename.

              Specify that TLS X.509 files above are in DER format instead of PEM.

              Don't abort a TLS connection if the server certificate fails validation.  Use  this
              only if you know the server uses an invalid certificate.

              Use  TLS  anonymous  authentication  -  replacing certificate authentication.  This
              means no external certificates or passwords are needed to set  up  the  connection.
              With  this  option  your  connection  is vulnerable to man-in-the-middle (active or
              redirection) attacks.  However, the data are integrity protected and encrypted from
              passive  eavesdroppers.   This  option  must  be used with the insecure option - to
              acknowledge that you know what you are doing.


              The failed message queue.

              The outgoing message queue.

              A trigger file to cause immediate delivery.

              The configuration directory.

              The protocol program directory.


       nullmailer-smtp(8),    nullmailer-qmqp(8)     nullmailer-dsn(1),     nullmailer-inject(1),
       nullmailer-queue(8),  mailq(1)  on  how to setup a
       certificate-less Postfix SMTP server