SMTP-SINK(1)                                         SMTP-SINK(1)

NAME
       smtp-sink - multi-threaded SMTP/LMTP test server

SYNOPSIS
       smtp-sink [options] [inet:][host]:port backlog

       smtp-sink [options] unix:pathname backlog

DESCRIPTION
       smtp-sink listens on the named host (or address) and port.
       It takes SMTP messages from the network  and  throws  them
       away.   The  purpose is to measure client performance, not
       protocol compliance.

       Connections can be accepted on IPv4 or IPv6 endpoints,  or
       on  UNIX-domain  sockets.   IPv4 and IPv6 are the default.
       This program is the complement of the smtp-source(1)  pro-
       gram.

       Arguments:

       -4     Support  IPv4  only. This option has no effect when
              Postfix is built without IPv6 support.

       -6     Support IPv6 only. This  option  is  not  available
              when Postfix is built without IPv6 support.

       -a     Do not announce SASL authentication support.

       -c     Display  a running counter that is updated whenever
              an SMTP QUIT command is executed.

       -C     Disable XCLIENT support.

       -e     Do not announce ESMTP support.

       -f command,command,...
              Reject the specified commands  with  a  hard  (5xx)
              error code.

       -F     Disable XFORWARD support.

       -h hostname
              Use  hostname  in  the  SMTP  greeting, in the HELO
              response, and in the  EHLO  response.  The  default
              hostname is "smtp-sink".

       -L     Enable LMTP instead of SMTP.

       -n count
              Terminate after count sessions. This is for testing
              purposes.

       -p     Do not announce support for ESMTP command  pipelin-
              ing.

       -P     Change  the  server  greeting so that it appears to
              come through a CISCO PIX system. Implies -e.

       -q command,command,...
              Disconnect (without replying) after  receiving  one
              of the specified commands.

       -r command,command,...
              Reject  the  specified  commands  with a soft (4xx)
              error code.

       -s command,command,...
              Log the named commands  to  syslogd.   Examples  of
              commands  that  can be logged are HELO, EHLO, LHLO,
              MAIL, RCPT, VRFY, RSET, NOOP,  and  QUIT.  Separate
              command  names  by  white  space or commas, and use
              quotes to protect white space from the shell.  Com-
              mand names are case-insensitive.

       -v     Show the SMTP conversations.

       -w delay
              Wait delay seconds before responding to a DATA com-
              mand.

       -8     Do not announce 8BITMIME support.

       [inet:][host]:port
              Listen on  network  interface  host  (default:  any
              interface) TCP port port. Both host and port may be
              specified in numeric or symbolic form.

       unix:pathname
              Listen on the UNIX-domain socket at pathname.

       backlog
              The maximum length the  queue  of  pending  connec-
              tions, as defined by the listen(2) system call.

SEE ALSO
       smtp-source(1), SMTP/LMTP message generator

LICENSE
       The  Secure  Mailer  license must be distributed with this
       software.

AUTHOR(S)
       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA

                                                     SMTP-SINK(1)