Domainkeys and ISPs
I'm setting up Domainkeys for my little ISP to help deal with the likes
of Yahoo, AOL, Verizon, etc. I have my outgoing server all setup to
sign outgoing messages from our customers (well, at least the ones we
host their DNS zone). But, I don't believe that forwarded messages are
being signed b/ the sender is not one of our customers (rather the
Since I'm new to the domainkeys thing, I'm not sure what is considered
okay or not. For example, I could sign every piece of email that leaves
our outgoing server. It seems pretty easy to do in exim4 by setting
$dk_domain to whatever I want in the router. But is that considered
uncool? Do other ISPs sign ALL messages to help deal with Yahoo?
Any insight is appreciated.
Michael F. Sprague | email@example.com
http://www.saneinc.net | System and Network Engineering (SaNE), Inc
Providers of the SpamOnion anti-spam service