Can you do an NSLookup FROM the Exchange server to that domain? Can you telnet to the other domains server?
-----Original Message----- From: Jason Mountford [mailto:[EMAIL PROTECTED]] Sent: Monday, November 19, 2001 10:18 PM To: MS-Exchange Admin Issues Subject: Host Unreachable in IMC I'm having a problem with Internet mail and some domains. It seems that messages over about 100K sit in the outbound mail queue and just keep retrying until they fail. If you bring up the details on the messages it tells me "Host Unreachable". The strange thing I find about it is that it will only happen when sending messages to certain domains. Has anyone else had a similar problem to this???? Exchange 5.5 SP4/NT4 SP6a Jason List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm