consistent email error pop3

The last two days now getting 0x80042110 error receiving email on my pop3 account. 

I already set up a ne Key, deleted the account and reinstalled it.  No change.

I am able to receive emails on my laptop imap and I phone on the very same account.  

I have had trouble off and on for two months now and this is the third time I have set up a new Key. 

Is ATT dropping pop3 support with no notice?