Re: [Exim] SOLVED: btinternet.com mystery

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Author: Dave C.
Date:  
To: Chris Thompson
CC: exim-users, Phil Chambers
Subject: Re: [Exim] SOLVED: btinternet.com mystery
Check the addresees of those messages a bit more closely:

# exim -bt foo@???
foo@???
deliver to foo@???
router = lookuphost, transport = remote_smtp
host btinernet.com [216.102.246.27]

# exim -bt foo@???
foo@???
deliver to foo@???
router = lookuphost, transport = remote_smtp
host stargate.btinternet.com [194.73.73.117] MX=10
host moongate.btinternet.com [194.73.73.118] MX=20



On Mon, 11 Feb 2002, Chris Thompson wrote:

> Phil Chambers <P.A.Chambers@???> writes:
>
> > I must be missing something here! Please enlighten me.
> >
> > I have a few bounce messages on my exim queue which have been sitting there for over
> > 24 hours. They are all addressed to ukgenetics.rm@??? and the message
> > logs give:
> >
> > btinternet.com [216.102.246.27]: Connection timed out
> >
> > It seemed odd to me that btinternet would be timing out and I looked up the MX
> > records for btinternet.com, tried an smtp telnet connection to both with no problem.
> > The mystery is why exim is logging [216.102.246.27] when my DNS lookup returned
> > [194.73.73.117] and [194.73.73.118] as the addresses for the MX hosts (stargate and
> > moongate.btinternet.com). There is no reverse entry for [216.102.246.27].
>
> and "Andrew Johnson" <linux@???> adds:
>
> > Incase it helps, here is who owns that subnet...
> >
> > Pac Bell Internet Services (NETBLK-PBI-NET-6)
> >    268 Bush St. #5000
> >    San Francisco, CA 94104
> >    US

> >
> >    Netname: PBI-NET-6
> >    Netblock: 216.100.0.0 - 216.103.255.255
> >    Maintainer: PACB

>
> It's always possible that btinternet.com have been doing wild things with
> their MX records, but it's more likely that you are suffering from DNS cache
> poisoning, quite possibly deliberate. What nameserver version are you using?
>
> Alternatively, maybe there's something unobvious about the "few bounce
> messages". Try forcing a delivery attempt for one or more of them with
> "exim -v -M [message-id]" and see if it tries 216.102.246.27 again.
>
> Chris Thompson
> Email: cet1@???
>
> --
>
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>
>


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