NAME

       popper — POP3 server

SYNOPSIS

       popper [-k] [-a plaintext|otp|sasl] [-t file] [-T seconds] [-d] [-i] [-p port] [--address-log=file]

DESCRIPTION

       popper serves mail via the Post Office Protocol.  Supported options include:

       -a plaintext|otp|sasl
               Tells  popper  which  authentication  mode  is  acceptable, sasl enables SASL (RFC2222),  and otp
               enables OTP (RFC1938) authentication. Both disable plaintext passwords.

       --address-log=file
               Logs the addresses (along with a timestamp) of all clients to the specified  file.  This  can  be
               used to implement POP-before-SMTP authentication.

       -d      Enables more verbose log messages.

       -i      When not started by inetd, this flag tells popper that it has to create a socket by itself.

       -k      Tells  popper  to  use Kerberos for authentication. This is the traditional way of doing Kerberos
               authentication, and is normally done on a separate port  (as  it  doesn't  follow  RFC1939),  and
               should be used instead of using SASL.

       -p port
               Port to listen to, in combination with -i.

       -t file
               Trace all commands to file.

       -T seconds
               Set timeout to something other than the default of 120 seconds.

SEE ALSO

       push(8), movemail(8)

STANDARDS

       RFC1939 (Post Office Protocol - Version 3)

AUTHORS

       The server was initially developed at the University of California, Berkeley.

       Many changes have been made as part of the KTH Kerberos distributions.

HEIMDAL                                           July 14, 2004                                        POPPER(8)