On Thu, Oct 08, 2009 at 10:13:33AM +0000, Duncan B. wrote:
>
> Hi all,
>
> I am setting up an SMTP backup MX server for a customer, and one of their
> specifications is that we check incoming mail for NDR/bounce mails without
> a valid "watermark". Surfcontrol adds a header similar to 'X-SEF'
> with a UUID on outbound mail, so any mail that's a bounce without this UUID
> header will be invalid.
>
> I will have to use the header_checks regexp directive, but how do I ONLY
> perform this check for a bounce (ie, MAIL FROM: <>) ?
You need a suitable content_filter or milter. No built-in Postfix feature
checks for the absence of a header, let alone conditions such a check
on the envelope sender address.
--
Viktor.
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