I am running Exchange 5.5 SP4 with Trend Micro Scan. I frequently have messages stack up in my IMS outbound queue. It seems like it is only specific domains that I have trouble with, but when they send me something inbound it delivers like a snap. When I go to the queue and check the message, it say's that there was a network error and couldn't resolve the domain name. I then click retry and then 90% of the time it will send it. I use my ISP's DNS servers. I am baffled. Any idea's what it could be?
List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm