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qmail-command(8)


NAME

   qmail-command - user-specified mail delivery program

SYNOPSIS

   in .qmailext: |command

DESCRIPTION

   qmail-local  will,  upon  your request, feed each incoming mail message
   through a program of your choice.

   When a mail message arrives, qmail-local runs sh  -c  command  in  your
   home  directory.   It makes the message available on command's standard
   input.

   WARNING: The mail message  does  not  begin  with  qmail-local's  usual
   Return-Path and Delivered-To lines.

   Note  that qmail-local uses the same file descriptor for every delivery
   in your .qmail file, so it is not safe for command to fork a child that
   reads the message in the background while the parent exits.

EXIT CODES

   command's  exit  codes  are  interpreted  as  follows: 0 means that the
   delivery was successful; 99 means that the delivery was successful, but
   that  qmail-local  should ignore all further delivery instructions; 100
   means that the delivery failed permanently (hard error); 111 means that
   the  delivery  failed but should be tried again in a little while (soft
   error).

   Currently 64, 65, 70, 76, 77, 78, and 112 are considered  hard  errors,
   and  all  other  codes  are  considered soft errors, but command should
   avoid relying on this.

ENVIRONMENT VARIABLES

   qmail-local supplies several useful environment variables  to  command.
   WARNING:  These environment variables are not quoted.  They may contain
   special characters.  They are under the control of a possibly malicious
   remote user.

   SENDER  is  the  envelope  sender address.  NEWSENDER is the forwarding
   envelope sender address, as described in  dot-qmail(5).   RECIPIENT  is
   the  envelope  recipient address, local@domain.  USER is user.  HOME is
   your home directory, homedir.  HOST is the domain part of the recipient
   address.  LOCAL is the local part.  EXT is the address extension, ext.

   HOST2  is  the  portion  of  HOST  preceding the last dot; HOST3 is the
   portion of HOST preceding the second-to-last dot; HOST4 is the  portion
   of HOST preceding the third-to-last dot.

   EXT2  is  the  portion  of  EXT  following  the first dash; EXT3 is the
   portion following the second dash; EXT4 is the  portion  following  the
   third  dash.   DEFAULT is the portion corresponding to the default part
   of the .qmail-...  file name; DEFAULT is not set if the file name  does
   not end with default.

   DTLINE  and  RPLINE  are  the usual Delivered-To and Return-Path lines,
   including newlines.  UFLINE is the UUCP-style From_  line  that  qmail-
   local adds to mbox-format files.

SEE ALSO

   dot-qmail(5), envelopes(5), qmail-local(8)

                                                          qmail-command(8)



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