What firewall are you using, and what flavor are you looking into? Of course, my first recommendation is ISA, but SonicWALLs are also great. John Tolmachoff Engineer/Consultant/Owner eServices For You -----Original Message----- From: paul_lemonidis@xxxxxxxxxxx [mailto:paul_lemonidis@xxxxxxxxxxx] Sent: Thursday, May 27, 2004 2:06 PM To: [ExchangeList] Subject: [exchangelist] RE: Backup MX records. http://www.MSExchange.org/ Hi John I am very grateful to Al for his help. I am now pretty convinced this is a Firewall issue as when I manually setup a second dedicated connector to the second MX record for the affected sites the messages are delivered. I was able to confirm this today, for certain. Most of the Domains affected only have problems from us which does also lend weight to my theory. The good news is that at least I have a temporary solution for now even if it not very elegant. Looks like it is time to invest in a new firewall. Once again both. Many thanks for your help. Regards, Paul Lemonidis. ----- Original Message ----- From: John <mailto:johnlist@xxxxxxxxxxxxxxxxxxx> Tolmachoff (Lists) To: [ExchangeList] <mailto:exchangelist@xxxxxxxxxxxxx> Sent: Thursday, May 27, 2004 4:22 PM Subject: [exchangelist] RE: Backup MX records. http://www.MSExchange.org/ Coming in late on this one. Al provided you with some good information. If you have further problems, post, and even though I will be at a client all day on Thursday, like I was today, I will try to jump in and see if I can lend a hand. John Tolmachoff Engineer/Consultant/Owner eServices For You ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: World of Windows Networking: http://www.windowsnetworking.com Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSEXchange.org Discussion List as: paul_lemonidis@xxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: World of Windows Networking: http://www.windowsnetworking.com Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSEXchange.org Discussion List as: johnlist@xxxxxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')