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In the next year I want to set up a personal email server with custom domain etc.
For spam issues, I want to create an email filter which sends in case of spam the exact same message back, like it would be, if the address wouldn't exist. This way, the spammers can not tell if it is a filter or the address doesn't exist.
Is there an existing solution, which supports this or supports tools to create this?
I haven't found anything yet.
2Please keep in mind that spammers often use fake sender addresses. So your replies might end up spamming innocent people (and you could be blocked or added to some blacklist by some ISP, just because you're sending a lot of non-deliverables). – mtak – 2017-06-28T08:09:19.827
1https://serverfault.com/questions/146855/how-to-make-spamassasin-reject-mail-based-on-score#569372 – davidgo – 2017-06-28T08:21:33.360
@mtak Right. Haven't thought about that. – MaestroGlanz – 2017-06-28T08:55:08.100