Issue

Some users are currently seeing an error in iOS where the *.atmailcloud.com certificate is displaying as "Not Trusted" for their domain, and have no "accept" option to bypass this warning due to a known bug in iOS.

Fix

Restarting the iPhone should allow an accept option to appear in the top right corner of the warning message.

Solution

If you have SSL certificates for your custom domains please feel free to send them to us via a support ticket. We'll happily install them for you on our servers for webmail, SMTP and IMAP services.