I deleted the account on my phone and recreated.  It changed the server port for outgoing mail server and seems to be working now.  Thanks for your help. ... View more

So my mail works fine on my iPad.  Mail was working fine on my iPhone until a couple of days ago when the certificate expiry issue message came up.   I have tried reentering my password.  I have tried just using mobile data.  I can log in via Post Office on my iPhone.   The message I am getting on my iPhone - Cannot Get Mail - The mail server "mail.tpg.com.au" is not responding.  Verify that you have entered the correct accoun info on Mail settings. ... View more

Mine is still not working.  Still saying error - expired security certificate. ... View more

I have the same issue.  Works on my iPad but not on my iPhone 13 with iOS 15.4. ... View more