Exchange 2003 SP2 + DC (only 1) Event ID: 3017 I have only 1 exchange server, but yet I see a Small Business SMTP server under connectors. We used to have a SBS running Exchange, then we migrated to this setup so I don't see a need for this, but I have not removed/deleted it yet. We have ports 25 and 587 for SMTP. Mall delivery has been working fine with the exception of NDRs. If I email a non-existant user from inside the network, the NDR works. The event ID points toward a looping between virtual servers, but we only have 1 virtual server (default). I can provide more information if needed. Please help! Thank you, Tim