A very odd email send failure.

[tim4rd]

Hi. This is the qmail-send program at outgoing.x10hosting.com.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<(private)@aol.com>:
Connected to 64.12.90.65 but greeting failed.
Remote host said: 421 4.7.1 : (DYN:T1) http://postmaster.info.aol.com/errors/421dynt1.html
I'm not going to try again; this message has been in the queue too long.


What is this saying :-/ is it saying that the email account won't be able to send emails or what? it's so confusing lol.

 

[misson]

AOL has an explanation for error 421 DYN:T1.

Some user abuse the X10 servers. The admins are doing their best to fight it, but it sometimes results in other e-mail providers blocking everything from X10, even domains that aren't causing problems.