Re: DNS Whitelists

[Marc Perkel]

Matt Kettler wrote: Marc Perkel wrote: I'm not thinking links, What I want to do is whitelist based on the host name of the server connecting to my server. You mean like bondedsender, and the current incarnation of Habeas? (Habeas is no longer based on the SWE haiku) Here's what I'm thinking. There are hosts out there who never send a single spam. And the host is something that spammers can't fake. So if we could somehow track that we could build a DNS list of hosts that don't have to be tested with SA or could just sail through with no other testing. For example, if the host name of the server that connects to me is *.paypal.com then I know it's not spam. So why bother with any other tests. SA is slow and resource intensive. So what I try to do is avoid it with DNS lists and Exim rules and use SA for what's left. this allows me to process far more spam per server than if I ran SA on everything. Also - I'm attempting to build a dns blacklist and I feed spam to other services like spamcop so that they can blacklist off of my feed. So on that feed and the data I forward I want to make sure that I never accidentally block earthlink or gmail or aol or other hosts who do send some spam. So that whitelist is for making sure that the host is never blacklisted. does anyone have a list of the major email providers like yahoo, gmail, earthlink, etc who have some spam but should not ne blacklisted in DNS lists?