Name
$g
Synopsis
The
$g
macro is identical to $f
except that it undergoes additional rule-set processing to translate
it into a full return address. During delivery the
sender’s address is processed by the
canonify
rule set 3, the rule set 1, and the
final
rule set 4, and then placed into
$f
. That rewritten address is further processed by
the canonify
rule set 3 and rule set 1 again, then
rewritten by the rule set specified in the S=
equate of the delivery agent. Finally, it is rewritten by the
final
rule set 4, and the result is placed into
$g
.
$g
holds the official return address for the
sender. As such, it should be used in the From
:
and Return-Path
: header definitions.
The S=
equate for each delivery agent must perform
all necessary translations to produce a value for
$g
that is correct. Because the form of a correct
return address varies depending on the delivery agent, other rule
sets should generally not be used for this translation.
Ordinarily, RFC2822 comments (Section 25.3.4) are
restored when $g
is used in headers. To omit those
comments (perhaps for security reasons), you can use the
F=c
delivery agent flag (F=c).
$g
is transient. If it is defined in the
configuration file or in the command line, that definition can be
ignored by sendmail. Note that a
$&
prefix is necessary when you reference this
macro in rules (that is, use $&g
, not
$g
).
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