450 Server configuration problem


#1

The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was ‘abcdefg@hotmail.com’. Subject ‘Re: Resending of Logo Art.’, Account: ‘my acct (mydomain.com)’, Server: ‘mail.mydomain.com’, Protocol: SMTP, Server Response: ‘450 Server configuration problem’, Port: 25, Secure(SSL): No, Server Error: 450, Error Number: 0x800CCC79

May I get help on how to rectify this issue? We could not send out any emails since 10am (GMT+8) in the morning. I read through the support pages on email config and could not find the solution. Please offer some advice. Thanks


#2

I’m seeing the same problem. Manifested itself in Mail.app reporting an ambiguous “problem” sending (Otherwise, it’s a decent client, but I wish it’d give out “real” error messages).

Telnetting to port 25 and attempting to send a test message to myself manually resulted in the 450 error.

Apparently at this time, DH has been aware of the problem for ~4 hours, at least when I checked via support.

Sending via webmail seems to work, so there’s a workaround. Annoying, but not critical.