From: Manu (postfix-users.mlguzu.net)
Date: Tue Nov 01 2005 - 11:44:16 CST

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Hi,

For some recipient like webmaster, abuse and such public addresses I
would like to force the mail to be encrypted (or signed). The checking
would be done at the "before queue" level, to be able send a message
telling that the message must be signed (by the sender) or encrypted
(with the public key of the recipient). Enventually, the message could
incorporate an URL to a formular on a website. Clearly this is mostly to
avoid SPAM but without deleting these addresses.

And now the question.
Is this mecanism break some RFC recommendations, or not ? Is this a
common mecanism to avoid SPAM on specific mail ?

Thanks a lot.

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