On Mon, 28 Feb 2011 13:46:10 +0200, Dima (Dan) Yasny wrote: > > DKIM is a method of publishing a public key in a txt DNS record, with which > the subject line of every email sent, is signed. When yahoo MTA's receive an > email, they don't just check the PTR record, they also check the subject > line signature, with the public key available in the DNS records. If the > signatures match - email goes through, otherwise it's dropped. > > And as for SPF: http://en.wikipedia.org/wiki/Sender_Policy_Framework
Thank you for your explanations. > > 2011/2/28 Hetz Ben Hamo <het...@gmail.com>: > > > [ use of DKIM and SPF for sending mail to Yahoo and Hotmail] This mail server - unix.mvs.co.il - does not have/use SPF/DKIM. The mail sent from it (or by it - it is used as remailer too) is not rejected from Yahoo, Gmail and many other mail servers (I did not check Hotmail, but as no mail returns from it, I assume it works too). I did get some rejects from revers DNS checker that don't do it right. I think Hetz's email rejection is either because of improper setting of its SPF, or because his IP is in some mail blacklist (you can use http://www.dnsbl.info/dnsbl-database-check.php to check). Ehud. -- Ehud Karni Tel: +972-3-7966-561 /"\ Mivtach - Simon Fax: +972-3-7976-561 \ / ASCII Ribbon Campaign Insurance agencies (USA) voice mail and X Against HTML Mail http://www.mvs.co.il FAX: 1-815-5509341 / \ GnuPG: 98EA398D <http://www.keyserver.net/> Better Safe Than Sorry _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
