Start doing various Telnet tests on port 25 (from outside to your firewall, from firewall to the Exchange server).
You can go to http://www.network-tools.com and from there you could do a variety of tests too. For example, you could stick your e-mail address there, then select E-mail Validation, then click Submit --- you will actually see the conversation between their mail server and your mail server (or your firewall). -----Original Message----- From: Niki Blowfield [mailto:[EMAIL PROTECTED] Sent: Thursday, December 11, 2003 1:27 PM To: Exchange Discussions Subject: RE: SMTP Not Reaching Exchange Server They don't show errors, just blocked websites and such, they arent very detailed -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of David, Andy Sent: 11 December 2003 16:08 To: Exchange Discussions Subject: RE: SMTP Not Reaching Exchange Server What do the firewall logs show? -----Original Message----- From: Niki Blowfield [mailto:[EMAIL PROTECTED] Sent: Thursday, December 11, 2003 8:47 AM To: Exchange Discussions Subject: SMTP Not Reaching Exchange Server Hi, Running MS Exchange Server 5.5 SP4 on Windows NT4 Single server environment, server sits on private address behind Sonicwall ProVX firewall Firewall forwards all SMTP to this server which has the IMC, has worked fine for a number of years Mail has stopped reaching mailboxes, and doesnt appear to be reaching the Exchange Server at all I would ordinarily suspect the firewall, but you can telnet to our mailserver successfully and send an email from there Our MX record points to mailgate.partition.co.uk which resolves to our Sonicwall ProVX Any ideas? I dont know a great deal about the Sonicwall I guess i could move the NT server temporarily to outside the firewall and give it the address of mailgate.partition.co.uk to see if i can eliminate the firewall Thanks Nik _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&; lang =english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&; lang =english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&; lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]
