sender verification

[Julian Field]

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The whole point of milter-sender and milter-ahead is that they are
implemented at the SMTP acceptance phase, and reject the message without
any local processing overhead if the checks fail. MailScanner does not
get involved with the SMTP conversation at all, I leave that to the MTA
(ie sendmail in this case), so it can't replace the functionality of a
milter as it doesn't get processed until later on, once the message has
been accepted.

Jim Holland wrote:

>Hi Julian
>
>I see that there has been some discussion earlier about the use of
>milter-sender with sendmail to verify that the sender's address does exist
>before accepting mail.  That then allows mail to be rejected at connection
>time if the sender's address seems to be fraudulent.
>
>I like the idea behind milter-sender, but would much prefer it to be
>integrated with MailScanner rather than sendmail, so that false positives
>(eg no-reply type addresses and other mail blocked due to problems that
>are sure to arise) result in mail being quarantined rather than bounced.
>Is this an option that you would be interested in accepting on the
>wishlist for future development of MailScanner?
>
>Regards
>
>Jim Holland
>System Administrator
>MANGO - Zimbabwe's non-profit e-mail service
>
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--
Julian Field
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