jails, cron and sendmail
Dirk Engling
erdgeist at erdgeist.org
Sun Aug 27 00:13:05 UTC 2006
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Hello,
I have the following problem: since I need and do not like any kind of
smtp activity in my jails (there's no 127.0.0.1 in a jail, all services
listen to the jails external interface), I put those lines into my
/etc/rc.conf:
sendmail_enable="NO"
sendmail_outbound_enable="NO"
sendmail_submit_enable="NO"
this works fine: nothing listening on the jails interface... except that
cron tries to deliver its status mails and fails.
While failing, sendmail seems to hog cpu and finally floods
/var/spool/clientmqueue and /var/log/maillog.
My quick fix now is to replace /usr/libexec/sendmail/sendmail with
/usr/bin/true in /etc/mail/mailer.conf, however: it seems problematic
that cron insists on a mail sub system, when all it should do is execute
stuff periodically. There should be an option to let it only log to a file.
For my jails this would make sense, too: I never read root's mails
locally, anyway.
Am I missing the obvious solution here?
erdgeist
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