Thank you for reply. I want, that from Postfix only authenticated users can send mail, and only from those addresses, which belongs them. For example, if we have user A, who has aliases AA, AAA, A_A, then before sending a message user A must pass authentication, after user can send message only from addresses. a...@example.com, a...@example.com, a...@example.com, a...@example.com.
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