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: <>) ?
I have reject_multi_recipient_bounce, but also need to perform these header checks.
Any help appreciated! Thanks, Duncan Baxter
