7.12 on page 925) to a value that is empty.
21.9.91 $S
The smart host mc configuration
Using the mc configuration method, the $S macro stores the host name defined by
SMART_HOST (?§17.3.3.6 on page 597). The smart host is the name of the host that can
deliver all mail that the local host cannot. $S is most often used withUUCP sites to get
DNS mail to the outside world. Do not use this $S macro directly, as it might change
without notice in a future version of sendmail. Instead, define this value using the mc
SMART_HOST configuration macro.
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846 | Chapter 21: The D (Define a Macro) Configuration Command
21.9.92 $t
The current date and time in the form YYYYMMDDHHmm All versions
The $t macro contains the current date and time represented as an integer in the form:
YYYYMMDDHHmm
For example, noon of January 13, 2006 would look like this:
200601131200
The value of $t is set in two places:
??? When sendmail first begins to run, it presets several date-oriented macros internally to
the date and time it was run. Among those are the $a, $d, $b, and $t macros. This initialization
is done after the configuration file is read.
??? Eachtime a new envelope is created, the $d, $b, and $t macros are given a default that
is the current time.
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