December 2002
Intermediate to advanced
1232 pages
56h 38m
English
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The mailstats Program
The sendmail program provides the ability to
gather information that can be used to produce valuable statistics.
As you will see, the StatusFile
(S) option (StatusFile) is used
to specify a file into which delivery agent statistics can be saved.
The mailstats(1) program prints a summary of
those statistics.
The statistics File
The sendmail program can maintain an ongoing record of the total number and total sizes of all outgoing and incoming mail messages handled by each delivery agent. This ability is enabled by defining STATUS_FILE in your m4 build file:
define(`STATUS_FILE',`/path')The /path is the full pathname of the file
into which statistics are saved. Version 8.12
sendmail provides configuration files that
specify /path as:
/etc/mail/statistics
Just declaring the StatusFile option is not
enough, however, for if the file does not exist (or is unwritable),
sendmail silently ignores that file and does not
save statistics. To avoid this behavior,
sendmail creates an empty file during
installation:
% touch /etc/mail/statisticsNote that the gathering of statistics can be turned off merely by renaming or removing the file.
Viewing Statistics: mailstats
The mailstats program is supplied with the sendmail source distribution to provide a convenient way to print the contents of the statistics file. The output of the mailstats program varies depending on the version of sendmail installed. For V8.12 sendmail the output looks like this:
Statistics from Mon Jan 14 10:56:15 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.