Following the disruption yesterday with the expiry of the *.apm-internet.net SSL certificate, we renewed the certificate last night.
However, for partners who are using their own domain but don’t have their own SSL certificate set up, this appears to be causing problems for iPhone users. Because the domain of the certificate does not match the domain the users are connecting to, the iPhone is complaining.
In the past, iPhones allowed you to accept this, but it would appear that Apple have removed this functionality and they are now complaining.
The simplest route around this is for the users to change their server settings to point at mail.overssl.net – this works for POP3, IMAP and SMTP.
EDIT: An update on this. It can be fixed by deleting the account on the iPhone/iPad etc, and re-adding it. That will keep things running for approx 3 years – at which time we’ll need to renew the certificate again and it’ll all break once more – unless Apple have fixed something by then.
Please accept our apologies for the inconvenience caused by all of this!