On Sat, 23 Feb 2008, Ben Wheeler wrote:

> No it's not saying that. It's saying "your server didn't say HELO
> with its fully qualified domain name". No more, no less.

You're right -- I meant, @mixxx.org in from (not that it matters
at that smtp step). This was a distraction.



> > My server is not logging alleged HELO names, so I can't
> > tell you what it says it's name is, but likely it's
> > saying "208-78-101-139.slicehost.net".
>
> In this case I'm afraid your guess has led you up a blind alley :)

Duh, I was too lazy to RTFM to see that 'stacktrace' was actually
the reported helo name...


> > 208.78.101.139 which maps to
> > 208-78-101-139.slicehost.net which maps to
> > 208.78.101.139 so that's clean.
>
> Exactly. So there's no reason why the connection would be refused on
> that basis.

Wull yeah, but by tcpd, it wouldn't have got that far and would
not have been in mail.log.


> > You have an A record that says mixxx.org is 208.78.101.139,
> > but an in-addr lookup of 208.78.101.139 does NOT return
> > "mixxx.org". Add a resource record to zone file mixxx.org
> > that does
> >
> > 139.101.78.208.in-addr.arpa         IN PTR  mixxx.org.
>
> That will do nothing in the zone file for mixxx.org.
> to be in the zone file for 101.78.208.in-addr.arpa. (and you lose
> 5 points for forgetting the trailing dot on the LHS.) And it's not
> the problem here anyway.

Aargh, my bad. Yes, I know quite well they are utterly different
zones (mixxx, inaddr), I mis-wrote. I wasn't even in a hurry!

The LH dot -- eh -- that was schematic response; I could have
no idea what the scope of the in-addr zone that would contain
that would be; likely it's simply '139. in ptr mixxx.org.' but
that's not illustrative here.  Yeah, it was dumb to state it
was in mixxx.org!


> In fact, it's generally Not A Problem
> if a lookup chain [hostname]-A->[addr]-PTR->[hostname] results in
> different hostnames. This is entirely normal. The situation that
> matters is if an [addr]-PTR->[hostname]-A->[addr] does not return the
> same IP address.

You are correct that the order of checks at tcpd wrapper time
is addr/ptr/addr, but generally speaking, the list of names
and numbers must be congruent (a member in each list). That's
all I meant.




> > Last, I strongly suggest that you comply with the irritating
> > and kludgey SPF crap
>
> This doesn't really have anything to do with the problem at hand.
> The jury's still out on whether SPF has any point, I certainly

SPF is likely crap and used by few; but the cost is a TXT
record. And many large sites DO use it.



> So in short, the problem is a misconfigured MTA at the sending end.
> Not the DNS. :)

Yes, you are correct. My bad. The MTA needs to simply utter a
valid name for HELO and likely the problem will be solved.

-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
Mixxx-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/mixxx-devel

Reply via email to