In our example, the envelope and
header sender are the same.
See also FEATURE(always_add_domain) (?§17.8.5 on page 616).
20.8.21 F=d
Never enclose route addresses in <> V8.7 and later
Ordinarily, V8 sendmail forces envelope-sender route addresses* to be enclosed in angle
brackets. But beginning withV8.7 sendmail, angle brackets can be omitted by specifying
F=d.
Under some circumstances, it is possible for these angle-bracketed addresses to be given to
a shell, causing them to be wrongly viewed as I/O redirection. This problem is most
common with the UUCP and prog delivery agents.
20.8.22 F=D
Need Date: in header All versions
The F=D delivery agent flag is used by sendmail.cf header commands to force the inclusion
of date information:
H?D?Resent-Date: $a
H?D?Date: $a
The F=D delivery agent flag has no special internal meaning to sendmail. It is a convention
that is used only in the assorted Date: (?§25.12.13 on page 1155) header definitions. See
?§20.5.6 on page 743 for a general description of this process.
* Also see the DontPruneRoutes option in ?§24.9.43 on page 1024, and how route addresses are handled in rules
in ?§19.3.3 on page 693.
This is the Title of the Book, eMatter Edition
Copyright ?© 2007 O??™Reilly & Associates, Inc. All rights reserved.
770 | Chapter 20: The M (Mail Delivery Agent) Configuration Command
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