> From: Lisa Casey > Sent: Saturday, January 14, 2006 8:16 AM > > I'm running Mimedefang/Spamassassin on a Redhat server with Sendmail.
Which versions? What sort of hardware (cpu type, speed, memory size) How many average messages/day? > This > has all been running fine for a couple of years now. Suddenly, > this morning > my customers were unable to send e-mail. Looking at > /var/log/maillog, I saw > lots of entries such as this: > > Jan 14 02:22:18 Raydeus-Dee mimedefang-multiplexor[1014]: No free slaves > Jan 14 02:22:18 Raydeus-Dee mimedefang-multiplexor[1014]: No free slaves Unless you have a very active night shift, 2AM is not a typical time to expect a mail overload. Couple of things to check: 1. disk space: try 'df -h' and note if any file systems are full or near full. Especially the one that /tmp lives on. 2. check your version of SA. Versions 3.0.0 through 3.0.3 are subject to Denial of Service attacks. 3. Try running, 'md-mx-ctrl rawstatus', and check 'man md-mx-ctrl' for an explanation of the results. With some work, you could write a cron script that tails /var/log/maillog and looks for the 'no free slaves' and have it run some combination of 'top -b | head -20', 'md-mx-ctrl rawstatus' and any other commands that can give you some info. on what might be going on. _______________________________________________ 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 MIMEDefang@lists.roaringpenguin.com http://lists.roaringpenguin.com/mailman/listinfo/mimedefang