Problems receiving e-mails to domains on Fasthosts - Help!

[Bob]

I have several domains hosted on Fasthosts and have a strange problem that I
can't get to the bottom of! I regularly receive e-mails from many sources
and have had no problems apart from one friend who has been totally unable
to successfully send e-mails to me. We've double checked that the address
he's using is correct, but they always get rejected when he sends them.
This only happens with this one particular guy and, as it was for my own
personal e-mail, I have just put up with it.

However, today one of my clients (whose domain I am hosting on Fasthosts,
and using e-mail forwarding) advised me that he has been suffering the same
problem, whereby two people he knows just cannot manage to send e-mails to
him. But like me he is successfully receiving e-mails to that address from
all other sources. When this issue originally came up I reported it to
Fasthosts but they had no idea what the problem could be.

Is anyone aware of what might cause such a problem?

[Jonathan Baker-Bates]

Can you get those people who have had mail bounce to show you the full
header and transcript information that they got with the bounce?

It's probable that it's nothing to do with your ISP and more to do
with theirs.

JJ

"Bob" <b...@nospammers.com> wrote in message
news:8vlt7n$i0n$1...@newsg2.svr.pol.co.uk...

[Anthony Wright]

If they are claranet customers this could the problem, from Clara support:

Some customers using email addresses of the format
na...@user.clara.co.uk may have experienced some mail bounces
over the past few days. This was due to misconfured DNS files

[mgraham...@iol.ie]

I have the same problem with some domains, and it seems to be related
to the level of subdomain which is being addressed. i.e. email to
users at domains of the form <subdom2>.<subdom1>.<domain>.org will
fail - e.g. fr...@temp.snooks.maindom.org

Here in Ireland, two of the major ISPs can't seem to handle that
format. (IOL and Indigo) But others can (Eircom, ESAT), as can UK
based ISPs such as BTinternet and, of course, Fasthosts Dial-in
itself. Support at the failing ISPs usually respond with "it shouldn't
work anywhere (very helpful!) but can't tell me why it is failing.

The only technical clue came back in one failure message as follows:

>From: <MAILER...@relay06.indigo.ie>
>To: <em...@cccdub.ie>
>Sent: Friday, September 29, 2000 10:42 AM
>Subject: failure notice
>
>
>> Hi. This is the qmail-send program at relay06.indigo.ie.
>> I'm afraid I wasn't able to deliver your message to the following
>addresses.
>> This is a permanent error; I've given up. Sorry it didn't work out.
>>
>> <webm...@christchurch.dublin.anglican.org>:
>> Recipient CNAME lookup failed temporarily. (#4.4.3)
>> I'm not going to try again; this message has been in the queue too long.
>>
>> <orga...@christchurch.dublin.anglican.org>:
>> Recipient CNAME lookup failed temporarily. (#4.4.3)
>> I'm not going to try again; this message has been in the queue too long.
>>
>> --- Enclosed is a copy of the message.
>>
>Return-Path: <em...@cccdub.ie>
>Received: (qmail 38299 messnum 1271121 invoked from network[194.125.173.120/ts13-120.dublin.indigo.ie]); 22 Sep 2000 08:41:12 -0000
>Received: from ts13-120.dublin.indigo.ie (HELO cccdub) (194.125.173.120)
> by relay06.indigo.ie (qp 38299) with SMTP; 22 Sep 2000 08:41:12 -0000
>Message-ID: <006901c02470$da71c4c0$78ad7dc2@cccdub>
>Reply-To: "Christ Church Cathedral Dublin" <em...@cccdub.ie>
>From: "Christ Church Cathedral Dublin" <em...@cccdub.ie>
>To: <webm...@christchurch.dublin.anglican.org>,
> <orga...@christchurch.dublin.anglican.org>
>Subject: Test again
>Date: Fri, 22 Sep 2000 09:40:57 +0100
>MIME-Version: 1.0
>Content-Type: text/plain;
> charset="iso-8859-1"
>Content-Transfer-Encoding: 7bit
>X-Priority: 3
>X-MSMail-Priority: Normal
>X-Mailer: Microsoft Outlook Express 5.50.4133.2400
>X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400
>

It's driving me mad.

Mike