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I run my own email server and have my mail address pasted over websites in plain text and whois records. Still I receive very few spam and not using any spam filter.

Here's what I did. Fit for personal use only, not business use.

* Setup DKIM signature and reject all mails that don't have one. Cut down spam 90%.

* Reject mails from .info .us and other country TLDs that you don't deal with. Further cut down spam by 90%.

* When I mark a first mail from a new domain as spam, the server blocks all future mails from it.

That's all. Works for me.




That sounds good, I've learned how to do SPF for outgoing mail but not yet DKIM - one day!

I saw a talk a few years ago on aggregating DNS lookups for insight into many things, spam included. The presenter said he had great results from simply blocking mail from domains that were less than 24hrs old.




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