On 1/13/2012 3:48 AM, DTNX/NGMX Postmaster wrote: > On 11 jan. 2012, at 16:12, email builder wrote: > >>> http://www.hardwarefreak.com/fqrdns.pcre <-- Stan's big list >> >> So who is using Stan's list? What do people have to say about >> it? What should I consider in regard to possibly implementing it? > > We use a modified version as a HELO blacklist. This avoids the false > positives we saw while testing it as a reverse DNS restriction but, because > the use of the reverse hostname as the HELO string is a common pattern in > spam attempts from compromised hosts, it's still very effective. > > It's a 'check_helo_access' restriction in our 'smtpd_recipient_restrictions', > and sits right before our RBL checks, where it has blocked 17235 attempts so > far this year, with zero false positives since we started using it, in > November somewhere. > > So another 'Thanks!' to Stan for providing something that saves us quite a > bit of time :-)
You're welcome Jona. Glad it's useful for you in this manner. I believe there are also some users who replace all of the default actions with their own PREPEND for use in scoring systems. I'm glad you are taking advantage of "...As such, you are completely free to use it and modify it as you see fit, for your purposes, with absolutely no strings attached." Even better than GPL in many ways. I still wish to this day I knew the identity of the original author of the predecessor REGEXP table, so I could credit him in the docs, but he simply wished to remain anonymous. I feel kinda weird/guilty/? each time I receive thanks/praise/credit for something I did not create, but merely polished a little, expanded a little, maintain a little, and did a little word-of-mouth advertising of on some lists. The heavy lifting was done by others. So, thanks foes to the anonymous original author as well. -- Stan
