On Tue, 10 Feb 2009, Marc Perkel wrote:
>
> OK - looking at it - but what does it do? I'm confused as to what it's
> objective is.
>
I thought the exim spec link provided was pretty clear:
Bounce address tag validation (BATV) is a scheme whereby the envelope
senders of outgoing messages have a cryptographic, timestamped tag added
to them. Genuine incoming bounce messages should therefore always be
addressed to recipients that have a valid tag. This scheme is a way of
detecting unwanted bounce messages caused by sender address forgeries
(often called collateral spam), because the recipients of such messages do
not include valid tags.
--
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Dave Lugo dlugo@??? LC Unit #260 TINLC
Have you hugged your firewall today? No spam, thanks.
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Are you the police? . . . . No ma'am, we're sysadmins.
