Increasing the scores for SPF failures but keeping them still reasonable as not ever mail server has setup SPF correctly even if legitimate.Increasing the scores for various DNSBLs where appropriate from their defaults.The main highlights of the changes I made was the following: Feel free to adapt of course for your own servers. Here is what I've got currently and it seems to be working very well for me and my users with no false-positives that I can find and much more in the spam box where they should be. I thought I'd share what I have currently which adds in a few new providers as well as increasing the scores from their defaults. Tip: You can easily override the default SpamAssassin scores or even create your own rules using the Custom Spam Filtering Rules feature in Cloudron.
#Spamassassin spf check archive#
I've trained them to use the spam folder and archive folder accordingly to train the filter for their account, but I also made a whole bunch of tweaks in the custom rules to overwrite scoring server-wide. It was already pretty decent at classifying spam that was spam with no false-positives, however there was still a good amount getting to the inbox for some users in particular. I've also improved the spam classifications for anything that gets past the DNSBLs. I already made some updates in the other post on DNSBLs, for anyone who hasn't seen that already.
I've made a ton of improvements and while still not perfect (it never will be) it's a giant leap over how it was a few weeks ago. I've been spending a long time lately on spam improvements on the Cloudron mail server.
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