domain blacklisted?
The company I work for has had a VPS account here for a few months now, and things have been working smoothly up until this afternoon when I received an email from a co-worker saying that one of our vendors said he noticed our domain was blacklisted. I checked our VPS IP against a blacklist database and, sure enough, it is blacklisted. How does this happen and how do we remove our domain from the blacklist?