F=F
Need From: in header All versions
The F=F delivery
agent flag is used by
sendmail.cf header commands
to force the inclusion of sender (From) information (F= on page 743):
H?F?Resent-From: $q H?F?From: $q
The F=F delivery
agent flag has no special internal meaning to
sendmail. It is a convention
that is used only in the assorted From: (From: on page 1157) header
definitions. See F= on page
743 for a general description of this
process.
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