On Thursday 18 January 2007 11:48, you wrote: > This turns out not to be the case. MX records tell you where to send > mail TO that domain, and have nothing to do with mail FROM that domain. > While the TO/FROM servers are often the same, they are also often not > the same, especially for large providers. > > Some domains provide SPF records in dns, and you can incorporate spf > checks into your MTA, SpamAssassin, etc.
Good points, but the several hundred I have manually checked over the last few months, I have easily been able to tell the difference. Aghh, but that's because I've only been checking SPAM's, not good emails as well. I have also looked at the IP range assigned when the MX or A didn't match. Yes, so it's more complicated. The 'road warrior' issue though could be a problem for some, but not for me as I don't use it yet. I think I'm going to try and do some stuff at the tcpserver/rbl level after it passes spamd initially just logging and checking. pop before send or smtp auth could be used for the road people in the future. I need to spend more time doing scripting anyway...so it could be a good learning curve. I never seem to have the time ordinarily. Well thanks again for all the responses. It's appreciated. Asking questions and getting excellent answers is what this list is all about. Regards...Martin
