my boss has an ...@btinternet.com email account on his iPhone. When he's connected to talktalk broadband at his home, the account shows error 'port 993 timed out' when synchronising. If the phone is connected to another network or using 3G/4G, it works fine.
The error began a few days ago.
-turned device off/on
-removed/re-added mail account
-tried toggling SSL on/off
-Spoken to ISP who were unable to help
I'm assuming this is simply an ISP fault but any help would be appreciated.