Compromised Octoberpest

[begin rant mode]

Certain email accounts with certain email providers
(those beginning with the letter "Y")
have stopped working.
This is irritating because a melange of others using the exact
same service DO function normally.
(I used each of them to send/receive emails between them)

Now, I understand that by keeping an email address for 25+ years
and having its ownership transferred between no fewer than
three other companies during that time might cause some
disruption but it was working two days ago.

*sigh*

and, of course, it would happen to be my MAIN email account.

[end rant mode]