Hi all, After to try some configurations to solve the problem with password change, I did not get success. The users have access its accounts of email, send and receive messages without no problem. I need that the mailuser has accepted the access of the username. I used a tip of cryptic and Torfinn Nome and ./W so that the squirrelmail has accepted the access through the format firstname.lastname@example.org, but if the user try to have access mailuser with domain.com_username is shown "Error: Password error: Authentication failed." Some tip? Thanks in advance.