In the middle of July I set up exchange accounts for 2 zoho hosted email accounts on my iphone. It worked beautifully.
Suddenly, sometime yesterday mails on both accounts stopped being pushed.
If I open the mail software, mails are retrieved but I'm using exchange over imap so I don't have to fetch.
I checked settings, everything looks exactly the same as it did when I set it up. It's an older iphone (4) so I tested it on an Android tablet as well but it had the same problem.
Any ideas?