[Cialug] RFC & best practices for mail server hostnames?

[L. V. Lammert]

At 04:25 PM 2/1/2013, Paul Gray wrote:
>On 02/01/2013 03:35 PM, Pixie wrote:
>>
>>o  The domain name given in the EHLO command MUST be either a primary
>>     host name (a domain name that resolves to an address RR) or, if
>>     the host has no name, an address literal, as described in
>>     Section 4.1.3 and discussed further in the EHLO discussion of
>>     Section 4.1.4.
>
>That is indeed a club.
>
>I had to hunt through the posts, but it was somewhere referenced 
>that the client EHLO identifies as bp75avo2.opr.statefarm.org, which 
>does not resolve.
>
>Their system should be identifying it as either [205.242.229.166], 
>mail41.statefarm.com, or even a different hostname just so that it resolves.

No kidding! Would you believe their last response was that we should 
whitelist ALL OF THEIR servers? What a joke!

At least I found out WHY - they're running Exchange. MCSE land [Must 
Call Someone Experienced].

         Lee