Re: [Exim] Prohibition message

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Author: Vadim Vygonets
Date:  
To: exim-users
Subject: Re: [Exim] Prohibition message
Quoth Lorens Kockum on Tue, Mar 14, 2000:
> On exim-users dcinege@??? wrote:
> >It is anal retentive
>
> Your problem.


A True BOFH Has Spoken.

> >and I believe a violation of RFC to do this.
>
> No. You can refuse mail for any reason you choose, including
> the phase of the moon and the price of water in Alaska relative
> to the price of sand in the Sahara.


I would not divide by zero if I were you.

> Refusing mail because the
> sending host refuses to be identified is a better reason than
> most.


Better than ones you stated anyway ;)

> I recently got a permanent IP address for personal use, and my
> contact who didn't know what rDNS was said uh, no, they can't do
> that, it costs money, they have to go to RIPE (European ARIN).


Nuke them. Please.

> It was bunk, of course, since they provided rDNS for other
> addresses in the same class C. I dug(!) up the NS, determined
> the machine type, and told them that on $MACHINE, in a file very
> probably named $DIR/$FILE, you add $LINE, and then you kill -HUP
> named.


There's also RFC2317 (a.k.a. BCP20), _Classless IN-ADDR.ARPA
delegation_, which deals with implementation of reverse DNS
delegation to clients who have less than class C.

> "They" apparently said "ooh, is it that simple", and did it.


If you're against nuking them, give them a present. O'Reilly DNS
books. And several RFCs, printed.

Vadik.

-- 
If you think C++ is not overly complicated, just what is a protected
abstract virtual base pure virtual private destructor, and when
was the last time you needed one?
        -- Tom Cargill, C++ Journal, Fall 1990.