Re: What is the AT&T smtp server for? The SSL is set to "off" Posted: Oct 11, 2009 7:51 PM in response to: Luba Cox Reply Email AT&T's SMTP server is for an email account that does not have an authenticated SMTP server in order to send messages with the account when connected to the internet via AT&T's cellular network. Using an account that supports SSL with the SMTP server is better than using an account with an SMTP server that does not support SSL, but when sending/receiving via AT&T's cellular network, all data is encrypted over the network, which is a GSM standard. Using an account that supports SSL with the SMTP server is more important when connected to an open wi-fi network. link »
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