>From outside the network do a nslookup for the MX record. Then you will need to determine where it is going through their fw (which internal system it's NAT'ed to.) Is the SMTP service running on the Exchange server? Is the IMS service running? Are all Exchange services running?
Here you go: Please keep this welcome message as a resource for maintaining your membership with the exchange Discussion Group. SUBSCRIBING: Send a blank message to: mailto:[EMAIL PROTECTED] -----Original Message----- From: Lich, Brian M. [mailto:[EMAIL PROTECTED]] Sent: Friday, December 20, 2002 12:05 PM To: NT 2000 Discussions Subject: Exchange Server problems Hello: I am not sure if this is the right place to post this. If not please let me know, and I can try somwhere else. I am helping out a friend that is out of town so I didn't set up this network. Also I am not by any means an Exchange guru. Here is what they have: Exchange 5.5 NT 4.0 Domain Yesterday morning all inbound and outbound emails quit working. When I send a message to it I get a SMTP 550 host unknown error. I called their ISP thinking it was a DNS problem, and they said everything should be working fine. I ran mtacheck.exe to make sure an email wasn't stuck or corrupted. Does anybody have any ideas that might help me out? There is another domain with another Exchange server (remember I didn't set it up) sharing the same T1 that is working fine. Any help will be greatly appreciated... Thanks in advance... Brian b.n+jjb )Zrb=!6 0 &zǚ1r,:.˛ m zf%y+ޞݴN6nz[,) ------ You are subscribed as [email protected] Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe send a blank email to [EMAIL PROTECTED]
