Name
F=p
Synopsis
The MAIL FROM: command normally uses the envelope address for the sender:
MAIL From:<jqp@wash.dc.gov>
If the F=p
delivery agent flag is specified,
sendmail instead sends a transformed version of
that address. The transformation can take one of two forms, depending
on the first character of the envelope address. If that address
begins with an @
character, an
@
, the local hostname, and a comma are prefixed to
that address to create a legal return path:
<@hub:jqp@wash.dc.gov> ↓ becomes ↓ <@ourhost,@hub:jqp@wash.dc.gov>
If the envelope address for the sender does not start with an
@
character, an @
, the local
hostname, and a colon are prefixed to that address:
<jqp@wash.dc.gov> becomes <@ourhost:jqp@wash.dc.gov
See also the DontPruneRoutes
option (DontPruneRoutes).
Note that these forms of address transformations are discouraged by
RFC1123. For this reason the F=p
delivery agent
flag is deprecated and might be removed from future versions of
sendmail.
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