the problem I seem to run into when into when hosting my own email these days is that my IP (currently with ovh) keeps getting marked by sbls because of some ot

the problem I seem to run into when into when hosting my own email these days is that my IP (currently with ovh) keeps getting marked by sbls because of some other bad citizen in the same block. I've been looking at sendgrid and authsmtp as potential ways to avoid this, but would love to hear what others are doing... those of you who hosts... how do you prevent from getting black listed?