I just registered to this forums using an e-mail address where the activation mail never was received. Thanks to Scott who activated my account by hand.
So I looked up unix.com in blacklists on mxtoolbox.com (I'm not yet allowed to post URLs...) and found that the site is blacklisted in three out of 89 blacklists. I guess if there is a way to unlist the site to get those difficulties with registration out of the way (and according to the posts in "Forum Support Area for Unregistered Users & Account Problems" I'm not the only one), then it must be done by an administrator of unix.com explaining to the blacklist-owner, why it should be unlisted. I read that you took some afford in keeping spammers away, maybe the blacklisting is from times when this wasn't yet working so good?
I'd be really looking forward to get unix.com unlisted from the blacklists, so that I can receive notifications
If I can help with it, please let me know, I will watch this thread for replys manually.