Q: double cname reference and resulting mx

[rgvt at gmx.net]

hello,

following scenario:

s3.dom.com -(cname)-> s2.dom.com -(cname)-> s1.dom.com

s2 & s3 do not have an associated mx.  only s1 has an mx.

what is the correct behaviour when sending mail to s3?

- the mx of s1 will be used and mail will be delivered
- or mail will not come through

in any case it would be great if somebody could point to a
location within an rfc where this will be allowed or denied.
i need this because someone who hosts a mail server
seems to believe that it conforms to the rfcs not to deliver
mail sent to s3.

thanks a lot,
-rgvt-


-- 
+++ GMX - Mail, Messaging & more  http://www.gmx.net +++
NEU: Mit GMX ins Internet. Rund um die Uhr für 1 ct/ Min. surfen!