1FORWARD(5) File Formats Manual FORWARD(5)
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6 forward - email forwarding information file
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9 Users may put a .forward file in their home directory. If this file
10 exists, smtpd(8) forwards email to the destinations specified therein.
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12 A .forward file contains a list of expansion values, as described in
13 aliases(5). Each expansion value should be on a line by itself. How‐
14 ever, the .forward mechanism differs from the aliases mechanism in that
15 it disallows file inclusion (:include:) and it performs expansion under
16 the user ID of the .forward file owner.
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18 Permissions on the .forward file are very strict and expansion is
19 rejected if the file is group or world-writable; if the home directory
20 is group writeable; or if the file is not owned by the user.
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22 Users should avoid editing directly the .forward file to prevent deliv‐
23 ery failures from occurring if a message arrives while the file is not
24 fully written. The best option is to use a temporary file and use the
25 mv(1) command to atomically overwrite the former .forward. Alterna‐
26 tively, setting the sticky(8) bit on the home directory will cause the
27 .forward lookup to return a temporary failure, causing mails to be
28 deferred.
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31 ~/.forward
32 Email forwarding information.
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35 The following file forwards mail to ``user@example.com'', and pipes the
36 same mail to ``examplemda''.
37 # empty lines are ignored
38 user@example.com # anything after # is ignored
39 "|/path/to/examplemda"
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42 aliases(5), smtpd(8)
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46 $Mdocdate: March 13 2015 $ FORWARD(5)