Le 10.03.2009 09:59, Stefan Schmidt a écrit :Thanks for asking. In the "Postfix Address Verification Howto" (http://www.postfix.org/ADDRESS_VERIFICATION_README.html) it says that:Nice thing, but just out of curiosity, why don't you use postfix' recipient verification mechanism? In smtp_recipient_restrictions add reject_unverified_recipient at a reasonable position in these restrictions. Everything else automagically happens. "A Postfix MTA verifies a sender or recipient address by probing the nearest MTA for that address, without actually delivering mail. The nearest MTA could be the Postfix MTA itself, or it could be a remote MTA (SMTP interruptus). Probe messages are like normal mail, except that they are never delivered, deferred or bounced; probe messages are always discarded." This is a very heavyweight process, especially if we have the Cyrus database at hand :) So I think that looking up an entry in a hash map is much faster and doesn't involve any SMTP/LMTP connection. And if the Postfix relay and the Cyrus database are not on the same physical computer, and someone's interested, I can extend my little tool to use a network connection to fetch the user database. Best regards -- Farzad FARID / Architecte Open Source - Associé Pragmatic Source / http://www.pragmatic-source.com Tel : +33 9 53 19 21 90 / Mob : +33 6 03 70 65 46 |
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