It shouldn't fail unless there is a firewall or filtering between the two servers. What was the error when you tried to telnet? Can you ping the other server at all by name and address? -----Original Message----- From: Rakesh Jain [mailto:rjain@xxxxxxxxxxxxxxx] Sent: Thursday, 8 January 2004 1:15 AM To: [ExchangeList] Subject: [exchangelist] RE: Can't send email between the domain http://www.MSExchange.org/ I tried to telnet but failed. How to enable the telnet on that port. -----Original Message----- From: Jamie A. Byrnes [mailto:jabyrnes@xxxxxxxxxxxxxxxxx] Sent: Tuesday, January 06, 2004 7:38 PM To: [ExchangeList] Subject: [exchangelist] RE: Can't send email between the domain http://www.MSExchange.org/ Can you telnet to port 25 from each server to the other? - use the server name to check DNS as well eg. "telnet xyzcustmail.com 25" Is it on a WAN/VPN or is it internet based? If its internet based have you checked something like www.dnsstuff.com for correct MX records? Are there firewalls involved, if so what type? Is it just SMTP routing? Was it ever working or is it new? Jamie. -----Original Message----- From: rakesh [mailto:rjain@xxxxxxxxxxxxxxx] Sent: Wednesday, 7 January 2004 11:10 AM To: [ExchangeList] Subject: [exchangelist] Can't send email between the domain http://www.MSExchange.org/ We have 2 domain in our network. one for customer and one for US. We can't send email to customer domain. Customer can send email to US. IS anybody the idea of how to resolve the issued ? The domian name you can assume are xyzcustmail.com and abcus.com Both servers are active directory integrated windows 2000. Both have exchange 2000. Anyhelp will be appreciated. Thanks ------------------------------------------------------ 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: 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 ------------------------------------------------------ ------------------------------------------------------ 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: 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 ------------------------------------------------------