[Mimedefang] Regexp help

[Ben Kamen]

Paul Murphy wrote:
>> We had to allow literal helo in correct format in private IP space,
>> after a few problem reports.  In some local network configuration that
>> I won't pretend to understand, the mail server is in a private network
>> and its outbound connections pass through a gateway.  We see the public
>> IP of the gateway box, but the mail server only knows its private IP
>> address.  If it says 'helo [10.1.2.3]' it is doing what it can.  This
>> at any rate is the story I got from 3 or 4 system admins before I gave
>> up on refusing for using private IP helo.
> 
> It should instead say "helo mail.xyz.com", and have the public DNS provide the public IP address in response to queries against that name.  If the reverse DNS also works and provides "mail.xyz.com", so much the better.
> 
> There really is no excuse for a private mail host advertising a private IP address on a public connection.

I have to ring in on this one too.

I'm still shocked at the number of legitimate businesses running quirky setup scenario setups.

Can't make PTR and A records match cause ISP won't/doesn't know how. (Companies like Texas Instruments!! HELLO!?!)
Can't make server point to an ISP mail relay which would fix up their problem in a sense.

and now the thing you mention.

It's 2008. Can we get with the program people?