We are seeing an issue with an SBS 2011 whereby every week, pretty much to the hour, Exchange is unable to communicate with Active Directory.
We see event logs which suggest that Exchange is unable to find any global catalogs (there are 2) within the domain.
This has been researched extensively by ourselves and Microsoft - but we aren't really getting anywhere.
Earlier this week a discovery was made that, whereby restarting the EdgeTransport.exe service appeared to restore connectivity and solve the issues.
We've noticed that there were a few processes running with high object handles. One of which was uninstalled (Sage Gateway) and another disabled (A300_Service) but this made no difference. The next object with the highest handles is EdgeTransport.exe.
The server and exchange is fully service packed.
Any ideas or suggestions please?