Hi! I just followed this tutorial on how to set up postfix. When I try to send a mail to the account mentioned in the tutorial ([email protected]) I receive a mail in my user account (/var/spool/mail/user) with the following: Code: From MAILER-DAEMON Thu Mar 3 13:35:07 2011 Return-Path: <> X-Original-To: [email protected] Delivered-To: [email protected] Date: Thu, 3 Mar 2011 13:35:07 +0100 (CET) From: [email protected] (Mail Delivery System) Subject: Undelivered Mail Returned to Sender To: [email protected] Auto-Submitted: auto-replied Content-Type: multipart/report; report-type=delivery-status; boundary="C8AF9A2CF7.1299155707/phunix02.2contact.ltd" Status: RO Part 1: Content-Description: Notification Content-Type: text/plain; charset=us-ascii This is the mail system at host phunix02.2contact.ltd. 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 <[email protected]>: Host or domain name not found. Name service error for name=mail.example.com type=AAAA: Host not found Part 2: Content-Description: Delivery report Content-Type: message/delivery-status Part 3: Content-Description: Undelivered Message Content-Type: message/rfc822 From [email protected] Thu Mar 3 13:35:07 2011 Return-Path: <[email protected]> X-Virus-Scanned: amavisd-new at localhost From: user <[email protected]> Date: Thu, 03 Mar 2011 13:34:58 +0100 To: [email protected] Subject: JKSJHdjhsd User-Agent: Heirloom mailx 12.5 7/5/10 Content-Type: text/plain; charset=us-ascii sdfsdfsdfjsdfhsdjfhsdfsd fsdf sdf I also installed Squirrelmail, but when I try to log in with the [email protected] account I get the following error: Code: ERROR: ERROR: Connection dropped by IMAP server. Does anyone know where I went wrong and how to make it work? Thanks!