@ sh2811: it's quite simple, Avast mail shield, when it's turned on, detects your email accounts in clients, and can immediately tell if the account requires ssl or not. If it does, you need to deactivate ssl in the client (OE in your case) and use standard ports. All your incoming and outgoing messages will be rerouted internally to the mail shield proxy that will in turn redo (reroute) the ssl incoming and outgoing connections to your email provider server using ssl ports.