F=: (colon)
Check for :include: files V8.7 and later
Prior to V8.7 sendmail, only the
local delivery
agent could recognize the :include: directive for creating
mailing lists (:include: Mailing Lists on
page 486).
Beginning with V8.7, any delivery agent can be made to
recognize the :include: directive by setting the
F=: delivery
agent flag (or to ignore it by not setting the
F=: delivery
agent flag). This delivery agent flag allows you to
design a local
delivery agent without :include: support or local-type clones
with :include:
support. In configuration files prior to version 6
(The V Configuration Command on
page 580), this delivery agent flag is automatically
set for the local
delivery agent.
This delivery agent flag is legal only for addresses
contained in ~/.forward files
or aliases(5) databases. Any
:include:
address in an SMTP dialog or on the command line
will be rejected.
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