Cron Uses /usr/sbin/sendmail

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Thursday, January 22. 2009

On a server running Zimbra on Ubuntu, to get cron job output sent to an e-mail address, make the following link:

ln -s /opt/zimbra/postfix/sbin/sendmail /usr/sbin/sendmail

Until this is done, crontab output will silently vaporize.

Installing the mta-dummy and mailx packages, then adding set sendmail=/opt/zimbra/postfix/sbin/sendmail to /etc/mail.rc will allow the mail command to send correctly, but will not enable crontab messages. I was under the false assumption that cron used the mail/mailx command when sending cron mail. This is an option, but whether to use mail/mailx or sendmail directly is a compile-time option, with most Linux distributions choosing to use /usr/sbin/sendmail directly.

Posted by Daniel E. Markle in System Administration at 20:09 | Comment (1) | Trackbacks (0)

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Confirmed that this is still the case with Zimbra 7 and Ubuntu 10.04. This fix also still works.

#1 James Pearce (Homepage) on 2011-12-11 21:04 (Reply)

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Cron Uses /usr/sbin/sendmail

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