-----Original Message----- From: LuKreme [mailto:krem...@kreme.com] Sent: zaterdag 4 april 2009 19:47 To: users@spamassassin.apache.org Subject: Re: Ways to block bouncebacks?
On 4-Apr-2009, at 04:07, Mark wrote: > > Consider using SRS. I wrote a (now somewhat older) doc about it, at: > > > > http://srs-socketmap.info/sendmailsrs.htm > > > > But it gives you an idea. There's good C implementations for it, > > these days, and it will definitely stop ALL fake bounce, with > > no FPs. > > I've read up on this a bit and while SRS seems like a really great > idea at first, I can see some real problems with it. Especially if > you have a mail cluster instead of a single server. Just to be clear on this, SRS wasn't my invention: it was primarily developed by Shevek, to work in conjunction with SPF. It is multi-teered, really (my doc just covers the basics). It allows for endless chained (SRS0/SRS1) return-paths, BerkeleyDB support (for resolving non-local machine parts) and, far as I know, has no known flaws. It can be found (Perl version) at: http://search.cpan.org/~shevek/Mail-SRS-0.31/lib/Mail/SRS.pm - Mark
