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
