12.19 on page 456). When sendmail is run (either as a
daemon or by hand) to process the queue, it gets its timeout period from the value of the
QueueTimeout option. As the queue is processed, each message??™s creation time is checked to
see whether it has timed out on the basis of the current value of the QueueTimeout option.
Because the configuration file is read only once (when sendmail first starts), the timeout
period cannot be subsequently changed. There are only two ways to lengthen the timeout
period: first, by modifying the configuration file??™s QueueTimeout option, and killing and
restarting sendmail; and second, by running sendmail by hand with the -q command-line
switch(?§11.8.1 on page 427) and setting a new timeout using an appropriate commandline
switch.
Although qf files should never be hand-edited, messages can theoretically be rejuvenated
(made to appear young again) by modifying the creation time that is stored in a queued
file??™s qf file. The details of the qf queue file are presented in ?§11.12 on page 445.
* That is, each message is instantly bounced if it cannot be delivered on the first try.
This is the Title of the Book, eMatter Edition
Copyright ?© 2007 O??™Reilly & Associates, Inc. All rights reserved.
1076 | Chapter 24: The O (Options) Configuration Command
Under V8 sendmail, the sender can be notified when a message is delayed.
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