Address rewriting?
I'm trying to figure out some apparent address rewriting going on when I send out email from my one server. I know it is happening on RoadRunner, and could be elsewhere. Anyone know if this is some form of SPF, canonicalization of address, or something?
When I send out an email, I am sending from sbalmos@foo.bar.com . foo.bar.com, in DNS, is actually a CNAME record to realbox.bar.com . When the email is received by my friend with the RoadRunner account, all header entries (especially From: and Reply-To
that *had* sbalmos@foo.bar.com now read sbalmos@realbox.bar.com .Likewise, when replying, or even sending a blank message, my friend tries to address it to sbalmos@foo.bar.com . But by the time it hits my box, it has been rewritten along the way to sbalmos@realbox.bar.com .
Is this because foo.bar.com is a CNAME entry to realbox.bar.com? It might also be worthwhile to mention that there's no MX entry in DNS for foo.bar.com itself. Rather just one for realbox.bar.com. PM me for the real address names, rather than bar.com ones, if you want to check DNS.
Thanks for any insight!
--Scott
