Use Mail in iOS 7 - Take Control of Apple Mail (1.0) - page 134

• Change the SMTP port for the account. Mail automatically tries the most com-
mon ports for SMTP (25, 587, and 465)—and automatically uses authenticated
SMTP for outgoing mail if available. But if your email provider requires a dif-
ferent SMTP port (such as 2525), go to Settings > Mail, Contacts, Calendars >
Account Name > Account > SMTP, tap the server listed under Primary Server,
enter a new port number in the Server Port Field, and tap Done. Now try sending
the message again.
• Turn on one or more additional SMTP servers for the account that's unable to
send. On the same screen as in the last step, tap the name of another server, tap
the Server switch to turn it on for that account, and try resending the message.
(However, be aware that in practice, this often fails, because SMTP servers tend
to reject messages whose From address doesn't match the sending account.)
• If all else fails, and your account is accessible via a webmail interface, log in using
Safari and send your message there.
Note: If you tried to send a message and it didn't go through, it may seem that the
message has disappeared. However, it's still there. Look in the top-level mailbox list;
there should be a new mailbox called Outbox. Once all messages in this mailbox have
been sent—for example, the next time you have a network connection—it disappears.
Other Suggestions
If you encounter any other email problems with your iOS device, or if none of the previous
suggestions helps, you have several other options:
• If your account supports webmail, try checking your email temporarily in the Sa-
fari app.
• Consult Apple's iPhone Mail support page or iPad Mail support page on the Web.
• Post an inquiry in Apple's iPhone Discussion Forum or in the iPad Discussion
Forum .
• Ask a Genius at your local Apple Store.