How to fix Zimbra Postfix MTA failed to start error

[mohitht]

Hi All,

Zimbra is an open source messaging tool. It can be installed with any linux servers.  It has a bundle of packages included with all POP , IMAP tools with postfix , antivirus and much more.

While restarting the Zimbra or  after the installation in plesk server it may fail to start due to either the certificate issue or may be some other MTA is blocking the start of postfix MTA or may be the xientd configuration issues.

If the problem with We can fix the issue by editing the configuration file as follows

edit the submission_psa

/etc/xinetd.d/submission_psa

change the disable value "No" to "Yes"


and also edit the
/etc/xinetd.d/smtp_psa

change the disable values "No" to "yes"


Then restart the zimbra by

/etc/init.d/zimbra restart

Thats it