DomainKeys

[elendal]

Privet,

How about adding DomainKeys technology to mail server? Yahoo and GMail use it.. So it is probably good. And because you control bind config and qmail you can add DomainKeys function without any problem.

And yahoo already developed patch for qmail...

http://antispam.yahoo.com/domainkeys/ http://domainkeys.sourceforge.net/

 

[Omniflux]

although gmail also supports the more widely deployed SPF, as does hotmail and excite