As confusing as it may be and I know you are convinced it is not a DNS problem but it is! The host is unreachable means exactly that, it cannot reach the host, which means the host is ether physically disconnected or the DNS is looking in the wrong place, ( subnets?). Thanks Edward -----Original Message----- From: Scott Overfield [mailto:soverfield@xxxxxxxxxx] Sent: Monday, December 10, 2001 11:26 AM To: [ExchangeList] Subject: [exchangelist] event id 3010 http://www.MSExchange.org/ Good Afternoon, My first post to the list.....does anyone know why I wouldn't be able to send mail to one domain? The messages hang in the IMC queue for a day with a host unreachable error......I have seen similar problems in the past, but not limited to one domain......BTW, the admin from the other domain and I have done extensive troubleshooting of this problem, and have determined it is not a network or DNS problem.....if I relay emails for that domain through my ISP, they are sent with no problem....there has never been a problem receiving mail from the same domain, just to make thing more confusing....any help appreciated. ******************************************** Scott Overfield Network Administrator Gratiot County Community Mental Health 989-466-4109 soverfield@xxxxxxxxxx ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: edwardmeyer@xxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')