[np422]

(English is not my native language)

Open relays were at the time manageable, even the ones that suddenly appeared when someone installed an old OS-version, as were the process for getting removed from the blacklists due to open relays.

Once you had one a computer lab workstation hacked and used for spamming - not so easy to get whiteliested anymore.

The university had a class B-network, trying to get the staffs subnet whitelisted while keeping the computer-labs blacklisted was apparently not possible according to the spam clearing houses. Blocking port 25 for outgoing traffic not possible to check from the outside and didn't help.

I can understand that organizations like spamhaus are overworked don't have the resources to handle every non-standard case on the internet as quickly as the blocked ip-range would like, but the replies we got were truly unhelpful.

The fact that someone bothered to register the domain stophaus.com seems to indicate that my experiences isn't uniqueue.