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fischerufa2018-05-17 09:53:39
postfix
fischerufa, 2018-05-17 09:53:39

How to implement an updatable white/black list for certain mailboxes?

Good day, I'm wondering if it's possible to implement in postfix the ability to make a dynamic (updated) white / black list of recipients.
You need something like the following, there are 3 mailboxes [email protected], [email protected], [email protected]
Forbid them to receive mail from recipients to whom they have never sent letters, that is, if they sent a letter to [email protected], then it is added to the white list and further letters from this mailbox quietly reach, if this white list does not contain this address, then the letter is being sent, let's say to the mailbox [email protected]

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