From: Barry555 on
I moved a client from a standalone server running Exchange 2003 (on Windows
Server 2003) on to a new server running Exchange 2007 (on Windows Server 2008
as part of Microsoft's Small Business Server 2008). Since then, the client
haven't been able to email ANY .nhs.uk clients (they could before the
upgrade). ALL my client's other non nhs.uk clients (and there are 1000s!)
are fine - it is just all .nhs.uk clients that are affected.

My client's DNS records haven't changed. Their SSL certificate has changed
from mail.client.co.uk to remote.client.co.uk. Their IP address is unchanged.

Looking at Queue Viewer (within Exchange Managament Console) the following
error message is shown:

451 4.4.0 Primary target IP address responded with "421 4.4.2. Connection
dropped." Attempted failover to alternate host, but that did not succeed.
Either there are no alternate hosts, or delivery failed to alternate hosts.

If I look at an email sent to me by client on the old server (Exchange 2003)
the email Internet Header has:

Received: from clientexchange.client2003.client.co.uk ([217.204.123.123])

An email sent to me from the new server:

Received: from remote.client.co.uk ([217.204.123.123] )

I did contact the NHS as I know they use grey-listing, but they said the
problem is at my client's end.

I tried telnet (telnet mail.nhs.uk 25) from the client's network and got the
following:

220 rlmh07.swi.contact.secure-ops.net ESMTP Mirapoint 3.8.3-GA; Fri, 28 May
2010
12:05:36 +0100 (BST)
ehlo client.co.uk
250-rlmh07.swi.contact.secure-ops.net Hello clientltd-2.dsl.easynet.co.uk
[217.20
4.123.123], resetting message state
250-8BITMIME
250-SIZE 28049408
250-DSN
250-ETRN
250-AUTH LOGIN
250-AUTH=LOGIN
250 HELP
mail from:client(a)client.co.uk
250 client(a)client.co.uk... Sender ok
rcpt to:accountspayable(a)midyorks.nhs.uk
451 accountspayable(a)midyorks.nhs.uk... Requested mail action not taken:
mailbox
unavailable

However, when I tried telnet from my own network (outside of my client's), I
got the same results, so I don't think this is helpful!

The smtp sendreceive log shows the following:

2010-06-07T09:07:25.838Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,19,10.1.0.2:33387,212.137.44.179:25,-,,Remote
2010-06-07T09:07:25.838Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,0,,212.137.44.179:25,*,,attempting to connect
2010-06-07T09:07:25.841Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,1,10.1.0.2:48294,212.137.44.179:25,+,,
2010-06-07T09:07:25.897Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,2,10.1.0.2:48294,212.137.44.179:25,<,"220
rlmh11 ESMTP; Mon, 7 Jun 2010 10:07:25 +0100 (BST)",
2010-06-07T09:07:25.897Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,3,10.1.0.2:48294,212.137.44.179:25,>,EHLO
remote.client.co.uk,
2010-06-07T09:07:25.917Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,4,10.1.0.2:48294,212.137.44.179:25,<,"250-rlmh11.swi.contact.secure-ops.net
Hello clientltd-2.dsl.easynet.co.uk [217.204.123.123], pleased to meet you",
2010-06-07T09:07:25.917Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,5,10.1.0.2:48294,212.137.44.179:25,<,250-8BITMIME,
2010-06-07T09:07:25.917Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,6,10.1.0.2:48294,212.137.44.179:25,<,250-SIZE
28049408,
2010-06-07T09:07:25.917Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,7,10.1.0.2:48294,212.137.44.179:25,<,250-DSN,
2010-06-07T09:07:25.917Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,8,10.1.0.2:48294,212.137.44.179:25,<,250-ETRN,
2010-06-07T09:07:25.917Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,9,10.1.0.2:48294,212.137.44.179:25,<,250-AUTH
LOGIN,
2010-06-07T09:07:25.917Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,10,10.1.0.2:48294,212.137.44.179:25,<,250-AUTH=LOGIN,
2010-06-07T09:07:25.917Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,11,10.1.0.2:48294,212.137.44.179:25,<,250 HELP,
2010-06-07T09:07:25.917Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,12,10.1.0.2:48294,212.137.44.179:25,*,55036,sending message
2010-06-07T09:07:25.917Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,13,10.1.0.2:48294,212.137.44.179:25,>,MAIL
FROM:<Dave(a)client.co.uk> SIZE=47994,
2010-06-07T09:07:25.945Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,14,10.1.0.2:48294,212.137.44.179:25,<,250
<Dave(a)client.co.uk>... Sender ok,
2010-06-07T09:07:25.945Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,15,10.1.0.2:48294,212.137.44.179:25,>,RCPT
TO:<Keith.I'Anson(a)tewv.nhs.uk>,
2010-06-07T09:07:25.981Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,16,10.1.0.2:48294,212.137.44.179:25,<,250
<Keith.I'Anson(a)tewv.nhs.uk>... Recipient ok,
2010-06-07T09:07:25.981Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,17,10.1.0.2:48294,212.137.44.179:25,>,DATA,
2010-06-07T09:07:26.001Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE6A2,18,10.1.0.2:48294,212.137.44.179:25,<,"354
Enter mail, end with ""."" on a line by itself",
2010-06-07T09:07:45.719Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE716,0,,216.82.254.211:25,*,,attempting to connect
2010-06-07T09:07:45.721Z,Windows SBS Internet Send
CLIENTSBS2008,08CCCB2BDB4CE716,1,10.1.0.2:48303,216.82.254.211:25,+,,

From: Ed Crowley [MVP] on
It looks to me like they're dropping your connections as some sort of an
antispam measure.
--
Ed Crowley MVP
"There are seldom good technological solutions to behavioral problems."
..

"Barry555" <Barry555(a)discussions.microsoft.com> wrote in message
news:9AAB932A-4563-47E5-9624-AD6F03D359B5(a)microsoft.com...
>I moved a client from a standalone server running Exchange 2003 (on Windows
> Server 2003) on to a new server running Exchange 2007 (on Windows Server
> 2008
> as part of Microsoft's Small Business Server 2008). Since then, the
> client
> haven't been able to email ANY .nhs.uk clients (they could before the
> upgrade). ALL my client's other non nhs.uk clients (and there are 1000s!)
> are fine - it is just all .nhs.uk clients that are affected.
>
> My client's DNS records haven't changed. Their SSL certificate has
> changed
> from mail.client.co.uk to remote.client.co.uk. Their IP address is
> unchanged.
>
> Looking at Queue Viewer (within Exchange Managament Console) the following
> error message is shown:
>
> 451 4.4.0 Primary target IP address responded with "421 4.4.2. Connection
> dropped." Attempted failover to alternate host, but that did not succeed.
> Either there are no alternate hosts, or delivery failed to alternate
> hosts.
>
> If I look at an email sent to me by client on the old server (Exchange
> 2003)
> the email Internet Header has:
>
> Received: from clientexchange.client2003.client.co.uk ([217.204.123.123])
>
> An email sent to me from the new server:
>
> Received: from remote.client.co.uk ([217.204.123.123] )
>
> I did contact the NHS as I know they use grey-listing, but they said the
> problem is at my client's end.
>
> I tried telnet (telnet mail.nhs.uk 25) from the client's network and got
> the
> following:
>
> 220 rlmh07.swi.contact.secure-ops.net ESMTP Mirapoint 3.8.3-GA; Fri, 28
> May
> 2010
> 12:05:36 +0100 (BST)
> ehlo client.co.uk
> 250-rlmh07.swi.contact.secure-ops.net Hello clientltd-2.dsl.easynet.co.uk
> [217.20
> 4.123.123], resetting message state
> 250-8BITMIME
> 250-SIZE 28049408
> 250-DSN
> 250-ETRN
> 250-AUTH LOGIN
> 250-AUTH=LOGIN
> 250 HELP
> mail from:client(a)client.co.uk
> 250 client(a)client.co.uk... Sender ok
> rcpt to:accountspayable(a)midyorks.nhs.uk
> 451 accountspayable(a)midyorks.nhs.uk... Requested mail action not taken:
> mailbox
> unavailable
>
> However, when I tried telnet from my own network (outside of my client's),
> I
> got the same results, so I don't think this is helpful!
>
> The smtp sendreceive log shows the following:
>
> 2010-06-07T09:07:25.838Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,19,10.1.0.2:33387,212.137.44.179:25,-,,Remote
> 2010-06-07T09:07:25.838Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,0,,212.137.44.179:25,*,,attempting to
> connect
> 2010-06-07T09:07:25.841Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,1,10.1.0.2:48294,212.137.44.179:25,+,,
> 2010-06-07T09:07:25.897Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,2,10.1.0.2:48294,212.137.44.179:25,<,"220
> rlmh11 ESMTP; Mon, 7 Jun 2010 10:07:25 +0100 (BST)",
> 2010-06-07T09:07:25.897Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,3,10.1.0.2:48294,212.137.44.179:25,>,EHLO
> remote.client.co.uk,
> 2010-06-07T09:07:25.917Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,4,10.1.0.2:48294,212.137.44.179:25,<,"250-rlmh11.swi.contact.secure-ops.net
> Hello clientltd-2.dsl.easynet.co.uk [217.204.123.123], pleased to meet
> you",
> 2010-06-07T09:07:25.917Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,5,10.1.0.2:48294,212.137.44.179:25,<,250-8BITMIME,
> 2010-06-07T09:07:25.917Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,6,10.1.0.2:48294,212.137.44.179:25,<,250-SIZE
> 28049408,
> 2010-06-07T09:07:25.917Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,7,10.1.0.2:48294,212.137.44.179:25,<,250-DSN,
> 2010-06-07T09:07:25.917Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,8,10.1.0.2:48294,212.137.44.179:25,<,250-ETRN,
> 2010-06-07T09:07:25.917Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,9,10.1.0.2:48294,212.137.44.179:25,<,250-AUTH
> LOGIN,
> 2010-06-07T09:07:25.917Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,10,10.1.0.2:48294,212.137.44.179:25,<,250-AUTH=LOGIN,
> 2010-06-07T09:07:25.917Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,11,10.1.0.2:48294,212.137.44.179:25,<,250
> HELP,
> 2010-06-07T09:07:25.917Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,12,10.1.0.2:48294,212.137.44.179:25,*,55036,sending
> message
> 2010-06-07T09:07:25.917Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,13,10.1.0.2:48294,212.137.44.179:25,>,MAIL
> FROM:<Dave(a)client.co.uk> SIZE=47994,
> 2010-06-07T09:07:25.945Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,14,10.1.0.2:48294,212.137.44.179:25,<,250
> <Dave(a)client.co.uk>... Sender ok,
> 2010-06-07T09:07:25.945Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,15,10.1.0.2:48294,212.137.44.179:25,>,RCPT
> TO:<Keith.I'Anson(a)tewv.nhs.uk>,
> 2010-06-07T09:07:25.981Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,16,10.1.0.2:48294,212.137.44.179:25,<,250
> <Keith.I'Anson(a)tewv.nhs.uk>... Recipient ok,
> 2010-06-07T09:07:25.981Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,17,10.1.0.2:48294,212.137.44.179:25,>,DATA,
> 2010-06-07T09:07:26.001Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE6A2,18,10.1.0.2:48294,212.137.44.179:25,<,"354
> Enter mail, end with ""."" on a line by itself",
> 2010-06-07T09:07:45.719Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE716,0,,216.82.254.211:25,*,,attempting to
> connect
> 2010-06-07T09:07:45.721Z,Windows SBS Internet Send
> CLIENTSBS2008,08CCCB2BDB4CE716,1,10.1.0.2:48303,216.82.254.211:25,+,,
>