I have already contacted Roadrunner to find out why the host name in the Outgoing Mail Server--mobile-smtp.roadrunner.com will not work. They state that it should read mobile-server.roadrunner.com. When I typed that in, it reverted back to the original phrase, and they said to get in contact with the mobile network. There must be a block in it. We tried a different port, however, that did not work either. Has anyone had this problem? I am receiving emails from roadrunner without incident.