3.2 on page 715.
20.5.10 N=
How to nice(3) the delivery agent V8.7 and later
The N= delivery agent equate is used to give a delivery agent a higher or lower priority in
relation to other processes. In general, this equate is useful only for programs that can
affect other programs because of increased system or disk load, or for programs that are
affected by others for the same reasons. This mechanism is discussed in the online manual
for nice(3).
The form for the N= delivery agent equate looks like this:
N=val
Here, val is a signed integer expression that will set the ???niceness??? to a positive or negative
value. If val is zero or missing, the niceness of the delivery agent is unchanged.
One possible application for the N= delivery agent equate might be with Usenet news.
Because news seldom needs to flow as quickly as normal email, its delivery agent (usenet)
can be forced to run at a low system priority. Just add a line suchas the following to your
mc configuration file:
define(`USENET_MAILER_PATH??, `/usr/lib/news/inews, N=10??)
The path shown should, of course, match the actual location of inews.
20.5.11 P=
Path to the delivery agent All versions
The P= delivery agent equate specifies the full pathname of the program that will act as the
delivery agent. The form for the P= delivery agent equate looks like this:
P=path
If path is missing, sendmail will print the following error message and set P= to NULL:
mailer agent_name: empty pathname
The path can also be one of three names that are defined internally to sendmail.
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