pl. Process them there
by hand with a long Timeout.queuereturn. When all of the backlogged mail has
flushed, you can restart sendmail to run as normal.
If it is not possible to stop sendmail for the time needed to flush the old messages,
you can leave the messages in the holding queue. For this to work, you will need to
generate a configuration file that does not use queue groups, and use that configuration
file to flush the holding queue.
11.10 Queue Quarantining
Queue quarantining is the process by which envelopes in the queue are marked as
being ineligible for delivery. Suchenvelopes may then be manually or automatically
reviewed. If the review uncovers no problems, each such envelope may then be delivered,
bounced, or discarded. Queue quarantining employs the queue??™s qf file,
command-line switches, and the access database. Lost envelopes (covered in the next
section) are also a part of this system.
11.10.1 Overview of Quarantining
A quarantined message is an envelope, containing one or more recipients, that is held
in the queue pending review. It can either be an inbound or outbound envelope that,
for policy or security reasons, should not be sent or delivered immediately, or not be
sent or delivered as is.
For example, consider a user who has a history of sending offensive email. You might
want to intercept sucha user??™s email on its way out, so it can be screened for words
or phrases that the user has been previously warned about.
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