Hi Ghislain, Am Donnerstag, den 01.09.2011, 23:51 +0200 schrieb Kees Theunissen: > On Thu, 1 Sep 2011, Ghislain wrote: > > >hi, > > > > i have from time to time a mimedefang-multiplexor crash. The > >mimedefang process is still here but mimedefang-multiplexor is down. > >Each time we have a : > > > > kernel: mimedefang[10760]: segfault at 130 ip 00007faef285c900 sp > >0000000042c200f0 error 4 in libmilter.so.1.0.1[7faef2851000+f000] > > > >(debian lenny 64 bits) > > > > I wonder how we could debug this and have an automatic way to restart > >the system when it triggers. The startup script of debian does not have > >a "status" command i could use for this and using a dumb "mimedefang > >start" do not work as it see the mimedefang process and think that all > >is ok and not down so it does not start. Of course a restart could not > >be used as if it work then restarting will kill performances especialy > >every 30 minutes ^^. > > > > > > Any idea on how to prevent this ? > > As I wrote in my other reply in this thread I think this is the bug > reported at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=527862 . > Message #47 in that thread mentions a patch that can be downloaded > from http://j-chkmail.ensmp.fr/libmilter . > The "debian-lenny/" directory at that site contains patched libmilter > debian packages for "Lenny".
I built these debian packages with Jose-Marcio's patch last year and since then my milters are running rock stable. The debian packages is only 32bit. For building the patch on your own: 1. install the following helper packages: aptitude install debhelper fakeroot m4 cdbs patchutils dh-buildinfo groff libdb4.6-dev libldap2-dev libwrap0-dev liblockfile-dev libsasl2-dev libssl-dev procmail 2. download sendmail latest package source package: aptitude source sendmail 3. download workes.c.patch from http://www.j-chkmail.org/download/libmilter/libmilter-workers-8.14.3-1.tgz and modify the frist two lines to let the package builder find the patch: --- sendmail-8.14.3/libmilter/worker.c 2007-12-03 23:06:05.000000000 +0100 +++ ./debian/patches/8.14/8.14.3/worker.c.patch 2009-06-15 09:46:29.000000000 +0200 4. copy workes.c.patch to sendmail-8.14.3/debian/patches/8.14/8.14.3 5. modify sendmail-8.14.3/debian/changelog, e.g.: -------- sendmail (8.14.3-5+lenny1.localguru.0) stable-security; urgency=high * Fixed segfault in libmilter (Closes: #527862) -- Marcus Schopen <[email protected]> Sat, 06 Mar 2010 02:07:11 +0100 -------- 6. rebuild the sendmail package dpkg-buildpackage 7. install the new libmilter package: dpkg -i libmilter1.0.1-dbg_8.14.3-5+lenny1.localguru.0_i386.deb The filename suffix "localguru.0" depends on your changes in debian/changelog 8. restart sendmail and your filters > I didn't test/use those packages as I'm running Debian Squeeze. > > > A quick and dirty workaround is inspecting the mail-logs and restarting > mimedefang in case of errors. > Something like: > > tail -n100 /var/log/mail.log | \ > grep -q 'Milter (mimedefang): to error state' && \ > /etc/init.d/mimedefang restart > > frequently run by cron should do the job (not jet tested). > The regular expression in the grep command is based on my logs after > the last crash a few weeks ago. Check monit for watchdog functionality. Ciao Marcus _______________________________________________ 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
