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mailwrapper exited on signal 11 30 November 2009
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With software comes upgrades. I have been running FreeBSD 6.x on several servers at home. I recently upgraded them to 8.x, using 7.x as a stepping stone. The upgrade process went well. All systems are up and running. However, I have noticed one particular problem which I now know how to avoid in future.

Avoiding Sendmail

I recently upgraded my development server to FreeBSD 8.0-PRERELEASE (which has since been released). I started to notice this error from time to time:

Nov 29 15:35:00 ngaio kernel: pid 91715 (mailwrapper), uid 1001: exited on signal 11 (core dumped)

After mentioning the error on IRC, it was suggested that my recent buildworld had overwritten my installed Postfix binaries. To fix the situation, I rebuilt Postfix:

portupgrade -f postfix
postfix stop
postfix start

To prevent this from happening again, the following was added to /etc/src.conf (a file which did not exist, so I created it):


The next build world will not build the mail wrapper or sendmail. This will save a bit of time during the process, but save me from this headache again.

Thanks qbit for pointing this out.

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