increase of spam on cpanel 39

[davehoo]

Since I was moved from cpanel 20 to 39, I've been getting hammerred with spam. Most of these are obvious spam but have a low spamassassin score

No, score=0.8 required=5.0 tests=BAYES_50,DATE_IN_PAST_06_12 autolearn=no version=3.1.1

Anyone have any ideas ? Does this server utilize blacklist checking ?

Thanks