Exchange 2010 – 420 4.2.0 RESOLVER.ADR.Ambiguous; ambiguous address
This is notes from a recent troubleshooting case. The client received the error: 420 4.2.0 RESOLVER.ADR.Ambiguous; ambiguous address and a lot of messages ended up in the Submission queue with this error. The error came after running GALsync. We have two Exchange 2010 forests and was running GALsync between the two. Forest A (contoso) was using one address space (contoso.dk) and Forest B (nwtraders) was using several address spaces (nwtraders.dk, litware.dk etc). Everything working fine …