Since I have upgraded our 2010 server (HUB,CAS,MBX) to SP1 our clients cannot delete messages using owa. We have a nonstandard port for SSL and it appears that the owa app cannot find EWS using the nonstandard port. This worked in the RTM version. Is this a supported configuration? It appears that owa is hard-coded to look at the stanard ssl port and is not reading the correct port. Is there a way to set the port being used for EWS?