Re: [exim] RFC-Ignorant is back!

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Autor: Russell King
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A: exim-users
Assumpte: Re: [exim] RFC-Ignorant is back!
On Mon, Sep 15, 2014 at 08:07:48PM +0100, Always Learning wrote:
>
> On Mon, 2014-09-15 at 15:41 +0100, Klaus Ethgen wrote:
>
>
> > Fascinating.
> >
> > > whois.rfc-clueless.org
> >
> > But this I do not understand. My domain (and my mail server and my whois
> > record) is fully rfc compliant. But I get 127.0.0.7 from a query for my
> > mail server.
> >
> > Even more, if I query my server via web I get a xml violation so my
> > firefox cannot display the query result.
>
> That is strange. Currently at 19:05 GMT, whois.rfc-clueless.org is *NOT*
> hosted anywhere
>
> ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-20.P1.el5_8.6 <<>>
> whois.rfc-clueless.org a
> ;; global options: printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15610
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
>
> ;; QUESTION SECTION:
> ;whois.rfc-clueless.org.                IN      A

>
> ;; AUTHORITY SECTION:
> whois.rfc-clueless.org. 2499    IN      SOA     ns2.corvorum.net.
> hostmaster.whois.rfc-clueless.org. 1410760060 16384 2048 1048576 2560

>
> ;; Query time: 8 msec
> ;; SERVER: 10.2.2.170#53(10.2.2.170)
> ;; WHEN: Mon Sep 15 20:03:35 2014
> ;; MSG SIZE rcvd: 103


I did reply to your message, but unfortunately, your system appears to
be misconfigured:

  exim@???
    SMTP error from remote mail server after HELO pandora.arm.linux.org.uk:
    host m2.u22.net [95.172.15.115]: 550-[2B21] Rejected. Invalid HELO/EHLO name. Suspected spam. Sender's host =
    550-gw-1.arm.linux.org.uk; Sender's HELO = pandora.arm.linux.org.uk :
    550 http://sys.u22.net/t01/t01p07.php


to which I say... you're really not worth replying to if you require helo
to match the hostname. If you want to do HELO name verification, then
implement CSA rather than cooking your own broken solution, resulting in
legitimate mail being blocked.

If not, I'll add you to my /dev/null list so I don't make the mistake of
replying to you in future.

Thanks.

--
Russell King