Article ID: 5780, created on Nov 24, 2008, last review on Aug 29, 2016

  • Applies to:
  • Plesk 12.5 for Linux
  • Plesk 12.0 for Linux


Login to Webmail fails, and the following error is shown in the mailog:

Nov 10 11:56:46 _hostname_ imapd: IMAP connect from @ []No such user'[](' in mail authorization   database
 Nov 10 11:56:51 _hostname_ imapd: LOGIN FAILED, ip=[]

Cause & Resolution

  1. The above "No such user" error message is generic and may as well appear due to other causes, e.g. when such mailbox does not exist in the domain. Thus, please check that it indeed exists and that all configuration files are in place.

  2. The issue may also happen if your server contains mailboxes with capital letters in their names. Check this article for more information:

113752 Email addresses containing capital letters do not work

Workaround: If it is indeed the case, you may try logging in to Webmail using the case-sensitive mailbox name. You should be able to look it up both in the control panel and in command line.

Search Words

No such user

a914db3fdc7a53ddcfd1b2db8f5a1b9c 29d1e90fd304f01e6420fbe60f66f838 56797cefb1efc9130f7c48a7d1db0f0c 742559b1631652fadd74764ae8be475e e335d9adf7edffca6a8af8039031a4c7 2a5151f57629129e26ff206d171fbb5f

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