On 2010-01-18 David Koski wrote: > My mail server has been getting a fair amount of spam hits that have > been rejected but the sender address is spoofed with the recipient's > address. This generates an NDR to the recipient with the spam. I > would like to suppress NDRs of this kind but not legitimate NDRs.
What I'm doing is this: - store a hash of From:, To: and Date: header of all outgoing mail - accept all bounces that include From:, To: and Date: headers whose hash matches a stored hash - remove stored hashes older than 4 days This method does lead to rejection of valid bounces that don't include the above mentioned headers. However, I consider those bounces useless anyway. Regards Ansgar Wiechers -- "Abstractions save us time working, but they don't save us time learning." --Joel Spolsky
