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This section introduces some common ways to determine the cause if problems arise. 1.7.1. Escaping chroot

The Ubuntu postfix package will by default install into a chroot environment for security reasons. This can add greater complexity when troubleshooting problems.


To turn off the chroot operation locate for the following line in the /etc/postfix/master.cf configuration file:


smtp inet n - - - - smtpd


and modify it as follows:


smtp inet n - n - - smtpd


You will then need to restart Postfix to use the new configuration. From a terminal prompt enter:


sudo systemctl restart postfix.service


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