9505 post office not available

GW2012 on SLES11
single PO - PO/MTA server, Webacc/GWIA/MTA server
3 users are getting the 9505 error saying something about soap.
But since datasync is working for these users, and other users are working in WebAcc am a bit lost for a reason.

Did see a TID saying a 9505 error using secure soap was reported to engineering (9/25/12).
But have not been able to determine if they are using secure soap for the server to server talking. Don't think so, but......

Having issues remoting in to check this or other things.

any ideas on what might be the issue appreciated.

WO