J4K put forth on 2/3/2011 4:09 AM: > True. Some of the matches don't reject, but prepend this header: > X-GenericStaticHELO > What is this header used for?
This exists due to the grey area between "residential" and "business" classification. Some providers offer static IP service to small businesses over cable/xDSL but don't offer custom rDNS. We don't block on these rDNS patterns outright because the probability is sufficiently high that the client MTA is legit vs a spambot. You, the OP, can use this header for scoring in a content filter such as SA. Note that you can change this header string to whatever you choose. You can also change the PREPEND to REJECT if you so choose. Modify the file/expressions any way you see fit to meet your needs. -- Stan
