We've been having problems with a couple domains as well. Check the mail log and see what address it is trying to send to. Compare that to the NSLookup information and see that the mail server is actually trying to send it to the MX record. The ones we were having problem with had an IP address in the MX record instead of the alias name. Once I convinced them to change their DNS's the problem went away. You can check the domain names using www.dnsstuff.com DNS report
Trent ----------- Trent M. Davenport - Systems Administrator Northern Television Systems Ltd - WHTV 203-4103 4th Avenue, Whitehorse, YT Y1A 1H6 (867) 393-2225 X204, (867) 393-2224 FAX www.whtvcable.com <http://www.whtvcable.com> ( [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> ) -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Gene Kingsley Sent: February 4, 2002 12:42 PM To: [EMAIL PROTECTED] Subject: [IMail Forum] error 550 Could someone explain this. I wrote an email and got this immediately. Is this my system or theirs? Gene -----Original Message----- From: System Administrator Sent: Monday, February 04, 2002 3:34 PM To: 'Belli, Jim (ITD)' Subject: Undeliverable: Training room at Holyoke Community College Your message did not reach some or all of the intended recipients. Subject: RE: Training room at Holyoke Community College Sent: 2/4/2002 3:34 PM The following recipient(s) could not be reached: 'Belli, Jim (ITD)' on 2/4/2002 3:34 PM 550 not local host x500exchange.mail.state.ma.us, not a gateway -- __________________________________________________________________ Your favorite stores, helpful shopping tools and great gift ideas. Experience the convenience of buying online with Shop@Netscape! http://shopnow.netscape.com/ Get your own FREE, personal Netscape Mail account today at http://webmail.netscape.com/ Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
