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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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FORWARD(5) File Formats Manual FORWARD(5)
forward — email forwarding information file
Users may put a .forward file in their home directory. If this
file exists, smtpd(8) forwards email to the destinations
specified therein.
A .forward file contains a list of expansion values, as described
in aliases(5). Each expansion value should be on a line by
itself. However, the .forward mechanism differs from the aliases
mechanism in that it disallows file inclusion (:include:) and it
performs expansion under the user ID of the .forward file owner.
Permissions on the .forward file are very strict and expansion is
rejected if the file is group or world-writable; if the home
directory is group writeable; or if the file is not owned by the
user.
Users should avoid editing the .forward file directly, to prevent
delivery failures from occurring if a message arrives while the
file is not fully written. The best option is to use a temporary
file and use the mv(1) command to atomically overwrite the former
.forward. Alternatively, setting the sticky(8) bit on the home
directory will cause the .forward lookup to return a temporary
failure, causing mails to be deferred.
~/.forward Email forwarding information.
The following file forwards mail to “user@example.com”, and pipes
the same mail to “examplemda”.
# empty lines are ignored
user@example.com # anything after # is ignored
"|/path/to/examplemda"
aliases(5), smtpd(8)
This page is part of the OpenSMTPD (a FREE implementation of the
server-side SMTP protocol) project. Information about the
project can be found at https://www.opensmtpd.org/. If you have
a bug report for this manual page, see
⟨https://github.com/OpenSMTPD/OpenSMTPD/issues⟩. This page was
obtained from the project's upstream Git repository
⟨https://github.com/OpenSMTPD/OpenSMTPD.git⟩ on 2024-06-14. (At
that time, the date of the most recent commit that was found in
the repository was 2024-06-09.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
GNU February 13, 2021 FORWARD(5)
Pages that refer to this page: mailaddr(7)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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