I use the tutorial Virtual Users And Domains With Postfix, Courier And MySQL (Ubuntu 6.10 Edgy Eft), when i send and email i recebe this in return: This is the mail system at host teiast.com. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to <postmaster> If you do so, please include this problem report. You can delete your own text from the attached returned message. The mail system <firstname.lastname@example.org>: unknown user: "hugomartins" When i try do telnet localhost 110 and try to enter whit the user i get this error: -ERR chdir teiast.com/hugomartins/ failed Connection closed by foreign host. In my mail.log when i try to login to the mail i get this error: Apr 26 23:01:10 teiast courierpop3login: chdir teiast.com/hugomartins/: No such file or directory I read alot of posts but i couldnt fix yet this problem can some one help me?