Well, your domain is "hidden" behind your postini servers, so I can't check it out. You should probably check for the standard stuff: good reverse IPs, disable smtp fixup on the PIX, etc. -----Original Message----- From: Jan Mt Pleasant [mailto:mtpleasantj@xxxxxxxxxxxxxx] Sent: Wednesday, January 11, 2006 11:59 AM To: [ExchangeList] Subject: [exchangelist] AOL, Yahoo and other servers do not respond to connection attempt http://www.MSExchange.org/ Since upgrading our mail server to Win2k3 and Exchange 2k3 (enterprise) over the holidays, we have been unable to send mail to certain domains, including AOL, Yahoo and others. The messages just sit in the queues and then time out. We're behind a pix firewall. I've checked the message boards and made sure that our IP has entered PTR and A records for us, but that doesn't seem to have helped. Any thoughts? Thanks. Jan Mt. Pleasant ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: michael@xxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Report abuse to info@xxxxxxxxxxxxxx