RE: Confusing NDR
- From: "Greg Wright" <greg@xxxxxxxxxxxx>
- To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
- Date: Fri, 18 Oct 2002 08:22:23 +1000
First thing to do, is check your SMTP logging. Find out what the logfile tells
you.
If there is anything there and your not sure, sanitise the information and post
it here.
Secondly, have you tried telnetting from your server to their mailserver? This
will verify that SMTP connections from your system to theirs works. This will
not take into account any DNS issue's.
It might be possible that they have a secondary MX hosted by their upstream ISP
in case of downtime. Ive seen ISP's tighten security, and make mistakes, then
when DNS refers a mail server to the secondary (for whatever reason) the ISP is
actually the one that causes the NDR.
Good Luck.
Greg.
-----Original Message-----
From: Elias, Delores [mailto:delias@xxxxxxxxxx]
Sent: Fri 18/10/2002 4:48 AM
To: [ExchangeList]
Cc:
Subject: [exchangelist] RE: Confusing NDR
http://www.MSExchange.org/
No, probably not. But others (from outside of their company) are able
to
send them mail with no problem. So I think their dns is probably okay.
-----Original Message-----
From: DÃniz Feital (Chiptek) [mailto:dfeital@xxxxxxxxxxxxx]
Sent: Thursday, October 17, 2002 2:44 PM
To: [ExchangeList]
Subject: [exchangelist] RE: Confusing NDR
http://www.MSExchange.org/
May be this is a dns problem. They can reach you (it means your
dns
server is Ok), but you cant reach them, may be their mx dns name has
changed, or are corrupted.
Are you able to check those things about dns?
Regards,
> DÃniz Feital
> GIC - Chiptek / VÃsper
> Tel (11) 3489-7730
> Microsoft Certified Systems Engineer
>
>
>
-----Original Message-----
From: Elias, Delores [mailto:delias@xxxxxxxxxx]
Sent: Thursday, October 17, 2002 3:36 PM
To: [ExchangeList]
Subject: [exchangelist] RE: Confusing NDR
http://www.MSExchange.org/
No. We replied, typed it in, used the address from Contacts. Same
thing.
-----Original Message-----
From: DÃniz Feital (Chiptek) [mailto:dfeital@xxxxxxxxxxxxx]
Sent: Thursday, October 17, 2002 2:34 PM
To: [ExchangeList]
Subject: [exchangelist] RE: Confusing NDR
http://www.MSExchange.org/
Hello.
Just wondering: If you dont try to reply, instead, type the
e-mail
address, does it go fine?
Regards
> DÃniz Feital
> GIC - Chiptek / VÃsper
> Tel (11) 3489-7730
> Microsoft Certified Systems Engineer
>
>
>
-----Original Message-----
From: Elias, Delores [mailto:delias@xxxxxxxxxx]
Sent: Thursday, October 17, 2002 3:18 PM
To: [ExchangeList]
Subject: [exchangelist] Confusing NDR
http://www.MSExchange.org/
I have a few users trying to send email to a client and his secretary.
They've been sending to them fine and just a couple of days ago they
started
getting NDRs when they send to them. I spoke with a tech from that
company
and he assured me that nothing changed for them and that they receive
emails
from others just fine.
I looked on MS KB and while I did find some articles, none of them were
helpful. Below is the message received when we try to send to this
company:
Your message did not reach some or all of the intended recipients.
Subject: Test
Sent: 10/16/2002 12:09 PM
The following recipient(s) could not be reached:
'______________' on 10/16/2002 12:09 PM
The recipient name is not recognized
The MTS-ID of the original message is: c=US;a=
;p="organization";l="server"-021016160847Z-910
******************
I can't figure out what happened. I double-checked their email
addresses -
they were correct. We can receive mail from them without a problem,
but if
we try to reply we get an NDR.
Any help would be appreciated.
Thanks
Delores
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