A friend of mine who buys ipads and iphones because he is a complete techno-phobe has a problem I can't fix either.

It's an ipad (running 9.3.5) has stopped accessing two IMAP email accounts he uses for work. Now this is basic stuff and the two accounts can be added to my android phone in under 30 seconds, but the ipad will just not verify the SMTP server.

Both accounts are using the same imap server which is mail.domain.com.

Both usernames and passwords are correct because we can open them in webmail and add them to my android phone.

We tried 3G and wifi, rebooted the ipad, deleted the outgoing servers, deleted the two accounts, but nothing.

When trying to enter a new account it just sits there on verifying and after a good five minutes it eventually says "Cannot Connect Using SSL". If we say create anyway it eventually puts us back to the settings screen. We then go into the SMTP server and add the details manually (mail.domain.com, Use SSL, username and password, port 465) again it just sits there on verifying until it says it can't connect.

What are we missing ?