HI.
As some have already suggested to you, I did the following on my small
MD server to improve performance of outgoing mail:
1. I have disabled antispam checking for outgoing mail, using the
following:
It is up to you to decide if you want to skip spamassassin check for
outgoing mail or not, and if so, which method or rules to use for that.
sub filter_end ($) {
my($entity) = @_;
# No sense doing any extra work
return if message_rejected();
# Spam checks if SpamAssassin is installed
if ($Features{"SpamAssassin"}) {
if ($RelayAddr =~ "^192\.168\.1"
or $RelayAddr eq "127.0.0.1") {
# note: You can add here logging or other commands to note that
SpamAssassin was skipped...
} else {
if (-s "./INPUTMSG" < 100*1024) {
# Only scan messages smaller than 100kB. Larger messages
# are extremely unlikely to be spam, and SpamAssassin is
# dreadfully slow on very large messages.
my($hits, $req, $names, $report) = spam_assassin_check();
etc....
2. It would be a good idea to follow the performance tuning steps to
improve MD performance in general for any mail traffic.
One major step is to put /var/spool/MIMEDefang on a RAM drive.
Read here:
Creating a RAM-based spool directory - MIMEDefang:
http://www.mimedefang.org/node.php?id=27
And here (page 142):
http://www.mimedefang.org/static/mimedefang-lisa04.pdf
Good luck,
Yizhar Hurwitz
http://yizhar.mvps.org
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