Article ID: 114511, created on Aug 3, 2012, last review on Jul 16, 2014

  • Applies to:
  • Plesk 11.x for Linux
  • Plesk 10.4 for Linux/Unix


When an email is sent to a Parallels Plesk Panel server with an apostrophe in the “From” address (such as abc’, an error is registered in the mail handler. When such an email is received, an error similar to the following may appear in the mail handler logs:

Unable to get sender handlers from the database

When this error occurs, emails can fail to be delivered to the recipient.


The cause of this error is a functionality bug in Parallels Plesk Panel. There are no security concerns or possibilities of compromised data from this bug.


Parallels is currently working on patches to resolve this issue. Once available, this Knowledge Base article will be updated with these patches.

dd0611b6086474193d9bf78e2b293040 56797cefb1efc9130f7c48a7d1db0f0c a914db3fdc7a53ddcfd1b2db8f5a1b9c 29d1e90fd304f01e6420fbe60f66f838 0a53c5a9ca65a74d37ef5c5eaeb55d7f e8756e9388aeca36710ac39e739b2b37

Email subscription for changes to this article
Save as PDF