Hello there, I can send emails from the domains hosted on the server but i can't receive emails. I get emails like: This is the mail system at host ro.sianimage.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> (expanded from <email@example.com>): Host or domain name not found. Name service error for name=ro.sianimage.com type=A: Host not found Reporting-MTA: dns; ro.sianimage.com X-Postfix-Queue-ID: 92E341BE802E X-Postfix-Sender: rfc822; firstname.lastname@example.org Arrival-Date: Wed, 1 Jul 2009 16:55:35 +0300 (EEST) Final-Recipient: rfc822; email@example.com Original-Recipient: rfc822;firstname.lastname@example.org Action: failed Status: 5.4.4 Diagnostic-Code: X-Postfix; Host or domain name not found. Name service error for name=ro.sianimage.com type=A: Host not found Can you please help me with this? I really am newbie in linux. All went OK so far, but i can't figure this. Thank you.