So I start trying to figure out why my facebook account keeps saying my e-mail is invalid, when I know it isn't. I look at my mail server and see it's all running just fine, and have been receiving mail from others just fine... so I tail the log and tell Facebook to re-confirm the address... Feb 25 19:08:18 postfix/smtpd[12682]: connect from outmail011.snc1.tfbnw.net[69.63.178.170] Feb 25 19:08:18 postfix/smtpd[12682]: NOQUEUE: reject: RCPT from outmail011.snc1.tfbnw.net[69.63.178.170]: 554 5.7.1 Service unavailable; Client host [69.63.178.170] blocked using bl.spamcop.net; Blocked - see http://www.spamcop.net/bl.shtml?69.63.178.170; from=<notification+m35-vi3_@facebookmail.com> to=<example@example.com> proto=ESMTP helo=<mx-out.facebook.com> Feb 25 19:08:23 postfix/smtpd[12682]: disconnect from outmail011.snc1.tfbnw.net[69.63.178.170] Anyone from Facebook or Spamcop lurking around to look into this? It's quite annoying.. I can't imagine how many other users are scratching their heads on this one... -S