Verified in production: running without -y definitely solves the problem in the situation as described.
The mimedefang process is now taking between 0.1 and 0.3 %CPU. It grew to well over 50% with -y. No one else has noticed this? It's a huge difference. Joseph Brennan Columbia University Information Technology --On June 22, 2016 at 08:57:38 -0400 Joseph Brennan <[email protected]> wrote: > > As we investigated a problem with memory usage on our new (6 weeks) mail > servers we noticed that the "mimedefang" process (the binary) grows larger > over time (days), even larger than 4 GB. We took a close look at "what > changed" and we noticed that Redhat (release 6.7) standard > /etc/init.d/mimedefang slips in the -y option, which we never used. > > The man page mentions "This function leaked memory in versions of > Sendmail prior to 8.14.4 so by default we do not call it". Hmm. > > We have Redhat's rpm of Sendmail 8.14.4 and Mimedefang 2.78, so it seems > all right. With our mods it starts up as: > > /usr/bin/mimedefang -P /var/spool/MIMEDefang/mimedefang.pid -m > /var/spool/MIMEDefang/mimedefang-multiplexor.sock -y -R -1 -U defang -a > auth_author -a client_ptr -a client_resolve -q -p > /var/spool/MIMEDefang/mimedefang.sock > > It looks like it is still leaking, at least with these Redhat rpms. We did > not compile so I can't verify what mods they may have done or that the > milter library is the one from 8.14.4. > > I'm going to run without -y on a test host and verify that we get the > sendmail macros we want without it. I expect we do--we always did. We may > need to run with real mail load for a few days to confirm that removing -y > solves the problem. > > Noted for comment and for advice to others. > > > Joseph Brennan > Columbia University Information Technology > _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
