SORBS
I have just spent hours this week trying to free up e-mail communication between my office and our parent company in Germany, whose ISP is Arcor.
It seems an organisation called SORBS - based in the Netherlands has arbitarily blocked communication from what we thought was a static IP address and their clients.
Checking their website and google-searching it looks as though it's an arrogant geek who has set himself up hiding behind a fairly childish homepage to police spam mails. Thats very laudible, but when it results in international commerce being screwed up it's almost bordering on cyber terrorism.
Has anyone else come accross this organisation, and how have you managed to deal with them? Were you successful in getting your IP address unblocked?