I can not send email from my GroupWise smtp connection from my iPhone at home when connected to my WiFi across my Comcast internet connection. When I send an email it fails to send. If I turn off WiFi and let 4G connect to the GroupWise server it sends the email just fine. The email is being sent by Groupwise at a remote location but somehow Comcast is blocking the phones ability to hand off the info to the server even though the server is offsite sending out email on ATT DSL circuit. This also happens in Jackson MS on Comcast with a fellow employee of mine.