Configure iPhone Mail for EDGEIf your ISP does not allow you to connect to their outgoing mail server to send email from outside their network, you can use the following AT&T outgoing mail server instead.

cwmx.com

-No user name or password required

-SSL OFF

AT&T’s outgoing mail server will only allow you to send mail while using an EDGE connection and will not work on a Wi-Fi connection. If you are connected to Wi-Fi and would like to send mail using AT&T’s server, turn off Wi-Fi by choosing Settings > Wi-Fi.

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