* Re: Broken mail setup
2007-09-10 13:39 ` Alan Cox
@ 2007-09-10 13:34 ` Sami Farin
2007-09-10 17:06 ` Valdis.Kletnieks
2007-09-11 2:59 ` Oleg Verych
2 siblings, 0 replies; 6+ messages in thread
From: Sami Farin @ 2007-09-10 13:34 UTC (permalink / raw)
To: linux-kernel
On Mon, Sep 10, 2007 at 14:39:34 +0100, Alan Cox wrote:
...
> > Well, outpipe-village-512-1.bc.nu is NXDOMAIN.
> > It should have A record 81.2.110.250.
>
> I've yet to see a specification which requires this.
You don't need specs.
My point was you might have better luck emailing people
if you have that A record.
--
Do what you love because life is too short for anything else.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Broken mail setup
2007-09-10 13:39 ` Alan Cox
2007-09-10 13:34 ` Sami Farin
@ 2007-09-10 17:06 ` Valdis.Kletnieks
2007-09-11 2:59 ` Oleg Verych
2 siblings, 0 replies; 6+ messages in thread
From: Valdis.Kletnieks @ 2007-09-10 17:06 UTC (permalink / raw)
To: Alan Cox; +Cc: Sami Farin, linux-kernel
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On Mon, 10 Sep 2007 14:39:34 BST, Alan Cox said:
> On Mon, 10 Sep 2007 16:20:42 +0300
> Sami Farin <safari-kernel@safari.iki.fi> wrote:
>
> > On Mon, Sep 10, 2007 at 13:59:12 +0100, Alan Cox wrote:
> > > Will RMK (rmk@arm.linux.org.uk) please fix his email setup otherwise I
> > > can't send serial/tty/arm stuff to him.
> > >
> > > "<<< 550 You have no reverse DNS; please try again when you have resolved
> >
> > Well, outpipe-village-512-1.bc.nu is NXDOMAIN.
> > It should have A record 81.2.110.250.
>
> I've yet to see a specification which requires this.
RFC1912 is admittedly "Informational" status. However, it *does* say:
2.1 Inconsistent, Missing, or Bad Data
Every Internet-reachable host should have a name. The consequences
of this are becoming more and more obvious. Many services available
on the Internet will not talk to you if you aren't correctly
registered in the DNS.
Make sure your PTR and A records match. For every IP address, there
should be a matching PTR record in the in-addr.arpa domain. If a
host is multi-homed, (more than one IP address) make sure that all IP
addresses have a corresponding PTR record (not just the first one).
Failure to have matching PTR and A records can cause loss of Internet
services similar to not being registered in the DNS at all. Also,
PTR records must point back to a valid A record, not a alias defined
by a CNAME. It is highly recommended that you use some software
which automates this checking, or generate your DNS data from a
database which automatically creates consistent data.
That advice came out in Feb 1996. You're being bit by the 3rd sentence.
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Broken mail setup
2007-09-10 13:39 ` Alan Cox
2007-09-10 13:34 ` Sami Farin
2007-09-10 17:06 ` Valdis.Kletnieks
@ 2007-09-11 2:59 ` Oleg Verych
2 siblings, 0 replies; 6+ messages in thread
From: Oleg Verych @ 2007-09-11 2:59 UTC (permalink / raw)
To: Alan Cox; +Cc: linux-kernel, Sami Farin
* Mon, 10 Sep 2007 14:39:34 +0100
* Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903
>
> On Mon, 10 Sep 2007 16:20:42 +0300
> Sami Farin <safari-kernel@safari.iki.fi> wrote:
>
>> On Mon, Sep 10, 2007 at 13:59:12 +0100, Alan Cox wrote:
>> > Will RMK (rmk@arm.linux.org.uk) please fix his email setup otherwise I
>> > can't send serial/tty/arm stuff to him.
>> >
>> > "<<< 550 You have no reverse DNS; please try again when you have resolved
>>
>> Well, outpipe-village-512-1.bc.nu is NXDOMAIN.
>> It should have A record 81.2.110.250.
>
> I've yet to see a specification which requires this.
This is very brutal way of doing things, that somebody forced to do
against unwilling e-mails. I have it enabled in exim also as an
experiment (thus, see reply-to/mail-follow-up). It doesn't stop, but
reduces spam.
Especially this is wrong WRT mailing list. That's why i've proposed
* trivial checking for `in-reply-to/references' (SHOULD in rfc2822)
(see, wizard -- no hands!)
* starting new threads will require valid ticket-requesting message
first (as part of patch bomb of something like that, for instance).
My experiments show, that spam doesn't have any hint of mail header
magic, only stupid ms outlook stuff. Thus i don't think that idea is
very insecure and all that kind of things. Conversely developers like
Alan will not spend time and energy arguing about `modern ways of
dealing with reality' :)
--
-o--=O`C
#oo'L O
<___=E M
^ permalink raw reply [flat|nested] 6+ messages in thread