Yes indeed that would be a tricky one. You have MX records for hosts in three countries ;-).
My thing now uses the MX record, well one of them (luck of the draw), to determine host ip location. It now seems better to go a bit farther and check ALL of the MX records for a matching country. This would let you through the door, so to speak.
I like SPF. It doesn't look like it's use is widespread at the moment. But I could see making SPF-pass override a failure from my checks, this would help. It would be like self-inflicted whitelisting with domain control. This is WAY better than to pay $3,000-$5,000 to be in a whitelist -else be blocked- that some ISP's are using.
Thanks for the links. and the SPF info. If I decide to do more than collect SPF data I will definitely use somebody else's plugin, not the hacked up one I did.
And if you are interested I have some stats up at http://emkwebdesign.com/mailstats.php that shows SPF pass/fail etc.
Take care
Waitman
Guillaume Filion wrote:
Well, your rule #1 would block my messages, I'm in Canada and sending with
the From header [EMAIL PROTECTED]
