MicrosoftWarning: the formatting of this "TLS 1.0 and 1.1 are not supported" error message DOES NOT conform to the POP3 protocol spec, which can break POP3 clients!
The message SHOULD have been prefixed with the "-ERR" status indicator. Omitting this status was allowed by RFC 1725, but disallowed by RFC 1939. It COULD have also included the extended "[SYS/PERM]" status code too, per RFC 3206.
Ideally, the error message SHOULD have looked more like this instead:
-ERR [SYS.PERM] TLS 1.0 and 1.1 are not supported. Please upgrade/update your client to support TLS 1.2. Visit https://aka.ms/popimap_tls.Leave it to Microsoft to NOT conform to established standards that the rest of us live by!
