[brosnank]

One of my clients is having a very annoying problem and I have not been able to find an answer for it so I hope someone here knows what is going on. They have an Exchange 2000 server and it has a huge delay sending mail to the users
mycingular.blackberry.net. The queue just keeps filling up with these messages and then every 2-3 hours they all go out. There is no other problems on this exchange server so it is starting to drive me crazy! Thanks....

[itguy]

Sounds to me like a DNS issue. Check the forwarding DNS servers on your virtual smtp server in the system manager. If there is only your internal DNS server listed you should add several outside of your domain.

You can also go to a command prompt and run
nslookup
set type=mx
mycingular.blackberry.net

See if it resolves correctly then type
telnet "ip you got above" 25

You should get an answer of some type from the server identifying itself. If not it is more then likely a dns issue. Get the correct IP; from my ISP's DNS servers I get
mx01.bwc.na.blackberry.net internet address = 206.51.26.134
mx01.bwc.na.blackberry.net internet address = 206.51.26.154
mx01.bwc.na.blackberry.net internet address = 206.51.26.128
mx02.bwc.na.blackberry.net internet address = 206.51.26.208
mx02.bwc.na.blackberry.net internet address = 206.51.26.129
mx02.bwc.na.blackberry.net internet address = 206.51.26.135
mx03.bwc.na.blackberry.net internet address = 206.51.26.136
mx03.bwc.na.blackberry.net internet address = 206.51.26.214
mx03.bwc.na.blackberry.net internet address = 206.51.26.130
mx04.bwc.na.blackberry.net internet address = 206.51.26.137
mx04.bwc.na.blackberry.net internet address = 206.51.26.215
mx04.bwc.na.blackberry.net internet address = 206.51.26.131
mx05.bwc.na.blackberry.net internet address = 206.51.26.223
mx05.bwc.na.blackberry.net internet address = 206.51.26.132

Try any of these and see if you get a quick response. If so add an entry into your hosts file on the exchange server to point to any of the above.