Article ID: 1742, created on Mar 15, 2007, last review on Aug 16, 2016

  • Applies to:
  • Plesk for Linux/Unix


During a mail name password update through Plesk CP, the following error occurs:

Error: Unable to set password:
The password is incorrect, use at least 5 characters. The password should not contain mail name as its part.
Only Latin characters, no dictionary words (optional).


The password does not conform to one of the following conditions:

1. The password cannot contain the login name as a part of the password.

2. The password length must be at least 5 characters.

3. The password must not be listed in a dictionary of simple passwords.


Policies 1. and 2. are hard-coded and cannot be changed.

3. Plesk checks the passwords using dictionaries from $RODUCT_ROOT/etc/dict.* that were created using the "cracklib" library ( If you wish, you may create your own dictionary.

The mail passwords' dictionary validation can be disabled through Plesk CP at "Server > Mail > Check the passwords for mailboxes in the dictionary." However, this is not recommended for security reasons. If users' passwords are too simple, they can guessed and the mail account can be used as a loophole for spamming through the Plesk mail server.

Try to use a stronger password that does not contain the path of the mail name or simple words.

Also, see this article: I get the error during mail name creation/migration that states "The password is incorrect, use at least 5 characters."

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