My ISP blacklisted my mail server within a couple weeks. I am not even particularly active in email. Heck, the company I work for gave up trying to host our ow

My ISP blacklisted my mail server within a couple weeks. I am not even particularly active in email. Heck, the company I work for gave up trying to host our own email blasts to customers as we were fighting with different places around the world *constantly* (we had a dedicated position just for dealing with this shit, and they were becoming overwhelmed).