These blacklists suck immensely.

The problem is that if a couple of people report a genuine piece of opt-in, marketing email which they have signed up for as spam (which it is not) as spam, the blacklist admin usually just adds your IP to the blacklist without actually verifying that the messages are spam.

Therefore anyone who sends newsletters or other marketing bits & pieces is liable to end up on one sooner or later, regardless of how correct their policy is.

Complain to the admin that you have been erroneously blacklisted and perhaps you can persuade them to stop using that blacklist.

Slarty