I have tried many times sending email to wp-hackers with my valid email address webmaster_REMOVE_THIS_@_ALSO_ME_mxchange._NO_SPAM_org (please remove the BIG_LETTERS). I have subscribed your mailing list and I also confirm the subscription within the time.
I can receive emails but I when I send one to it I'll receive neither my own email nor replies on it. I guess no one has received my email, anyway.
On my server I relay over "localhost" to pipe the sent email through Amavis-New (meta virus scanner, pipes mail through many "real" scanner including SpamAssassin) because when one weak password got "hacked" the attacker can hopefully still not sent out his virus or spam mails...
Back to topic. So maybe you can help me here? When I check logfiles (mail.log) my server received the reply "status=sent" from your mail server.
Quix0r aka Roland
PS: Great work you have all done! WP rox!!! :-D