Hi guys, I have been having a problem where mails to certain domains are not delivered. I recently changed my firewall to Cisco ASA from a cis pix 501 and a week later the problem started. After much troubleshooting, I changed back to the pix and now mails are being delivered to all domains. We are currently troubleshooting the ASA. Cisco advices that the 8.0(3)version of the ASA software will fix the problem. I’ll try this then test. Hope this helps some of you if not all.