Did you upgrade from E2K to Exchange 2003? or just apply the latest SP1 service pack? All Exchange versions and SPs on Unity, must match the Exchange production servers. So if you have Exchange 2003 SP1 on the three Exchange servers, make sure Unity has the same Exchange Admin verison and SP1.
Check your DNS settings that all of AD is functioning properly. Most of the time, it is some DNS issue not resolving a server name correctly or in a timely fashion.
Check your Event Log on each of the servers to make sure some Unity Services account is not being denyed permission.
The permissions wizards you ran, make sure it is the latest and greatest. You can download the newest version at www.ciscounitytools.com
The Exchange 2003 SP1 [Version 6.5 (Build 7226.6 Service Pack 1)] infrastructure was in place prior to the Unity 4.0(4) install and and since the 4.1(1) upgrade; the 4.0(4) install also used the Exchagne 2003 SP1 admin interface. All servers are reachable and DNS resolvable from the Unity server. The functionality works on 1 out of the 3 exchange servers and there is nothing different between the servers.
Just as an FYI to anyone else who is having this problem the issue has been resolved; apparently during the Uninstall of 4.0(4) there were some users whose "subscriber" attributes were not removed; used the "RemoveSubscriberProperties.exe" tool and now those users can be imported without issue.
SIP traces provide key information in troubleshooting SIP Trunks, SIP
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Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
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