Hi, I have followed the howtoforge tutorial : http://www.howtoforge.com/perfect-se...04-ispconfig-3 Now I have a problem with emails for my main server. Well as you know in order to create email addresses, you'd have to create a mail domain then a mail box. So I go to ISPConfing and create a mail domain mydomain.tld and then go create a mail box [email protected]. All good so far, and I can log into squirrelmail, which means the mysql record has been successfully created. The problem is with receiving email at this address. When i email this address I says: <[email protected]>: unknown user 'admin' and here's the report: Reporting-MTA: dns; mydomain.tld X-Postfix-Queue-ID: 7162CC953 X-Postfix-Sender: rfc822; [email protected] Arrival-Date: Sun, 17 May 2009 13:52:50 +0000 (UTC) Final-Recipient: rfc822; [email protected] Original-Recipient: rfc822;[email protected] Action: failed Status: 5.1.1 Diagnostic-Code: X-Postfix; unknown user: "admin" please help.