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hey fediverse, I need some #sysadmin #help.
I'm running a small #email linux server with #spamassassin, #postfix, dbl. SA is learning daily from junk mailboxes.
but still a lot of spam is coming through and friends on my box are getting increasingly frustrated.
what are your sure-shot spam-fighting techniques? please help with advice!
(pliz boost)
@mrb @randomdent Yes, this.
Also DKIM and SPF validation on incoming messages, though this is becoming less useful.
@mrb @randomdent Don’t forget to throw in an RBL or two, as well, so that mail from known bad hosts is rejected.
@randomdent
Hmm. I have several blocklists on mine. Mind sharing what blocklists you're using? You cab do so over fediverse, or if you have xmpp, you can reach me there!
@randomdent i still find that greylisting is very effective, although the delay can sometimes be annoying for legitimate mail