21.9 Alphabetized sendmail Macros | 841
21.9.80 ${quarantine}
The reason why envelope was quarantined V8.13 and later
V8.13 introduced queue quarantining (?§11.10 on page 438), the process by which envelopes
in the queue are marked as being ineligible for delivery. Such quarantined envelopes
may then be reviewed manually or automatically.
When a message is quarantined, the reason it was quarantined is stored as the value of this
${quarantine} macro. When it is later read from the queue, the value of the queue file??™s q
line (?§11.10.2.9 on page 444) is again copied into this ${quarantine} macro.
Note that the ${quarantine} macro can also be used to detect whether a message has been
quarantined.
21.9.81 ${queue_interval}
The interval specified by -q V8.10 and later
When sendmail first starts, the -q command-line switch(?§11.8.1 on page 427) tells it how
often to process its queues. The form of that command-line switch looks like this:
-qinterval
The interval is an expression composed of numbers and letters that sets the time interval
between queue processing runs. The following, for example, sets the interval to be once
every 2 hours, 13 minutes, 7 seconds:
-q2h13m7s
In typical installations, the interval is usually expressed only in minutes:
-q15m
When sendmail first starts, it finds the -q command-line switch, then places the interval
value into the ${queue_interval} macro.
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