Article ID: 5819, created on Dec 2, 2008, last review on Aug 12, 2014

  • Applies to:
  • Plesk 10.x for Linux
  • Plesk 9.x for Linux/Unix


I plan to switch from Qmail to Postfix or vice versa in Parallels Plesk Panel.
Will my EMail messages or queue be lost during the switching?


EMail messages are not deleted during MTA switching. Old messages are available in Webmail.
Both Qmail and Postfix use same root directory PLESK_MAILNAMES_D to store incoming messages. For example email messages that come to MAIL@DOMAIN.TLD are stored in directory


Use the following article to get value of PLESK_MAILNAMES_D for your system:

However mail queue is removed during MTA switching. It is recommended to process the queue before switching MTA.
Find details about how to switch MTA in Parallels Plesk Panel in this article:

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