I am not able to send email to any hotmail email address from the itmstratford.co.nz domain. All other sending of email from the site is OK. The ITM Stratford users receive the following message immediately from hotmail when they attempt to send a message to any hotmail address.
Delivery has failed to these recipients or distribution lists:
An error occurred while trying to deliver this message to the recipient's e-mail address. Microsoft Exchange will not try to redeliver this message for you. Please try resending this message, or provide the following diagnostic text to your system administrator.
The following organization rejected your message: col0-mc3-f11.Col0.hotmail.
Sent by Microsoft Exchange Server 2007
Diagnostic information for administrators:
Generating server: STITM01.itmstratford.local
com #550 OU-002 (COL0-MC3-F11) Unfortunately, messages from 18.104.22.168 weren't sent. Please contact your Internet service provider since part of their network is on our block list. You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors
Original message headers:
Received: from STITM01.itmstratford.local
2%10]) with mapi; Tue,
18 Oct 2011 08:25:35 +1300
To: "email@example.com" <firstname.lastname@example.org>
Date: Tue, 18 Oct 2011 08:25:34 +1300
I suspect Hotmail / Windows Live have blacklisted itmstratford.co.nz somehow, however the domain is not on any RBL listing that I can find and it appears to come up clean.
I have checked with the companies ISP as well, Clear.net.nz and all is OK. Again the mail server IP has been checked and the ISP has also confirmed that it is not black listed. The ISP is able to send email to hotmail.com with no problem so I understand the issue is not with the ISP and not on the local mail server?
An explaination given based on the error reads something like this:
The Mail could be rejected by Windows Live Hotmail for policy reasons. Reasons for rejection may be related to content with spam-like characteristics or IP/domain reputation. If you are not an email/network admin please contact your Email/Internet Service Provider for help.
The ISP thing has just been done and I am wondering if there is a "Private" database at the Hotmail end that needs to be updated to resolve the issue?
I would be glad if someone could point me in the right direction because it appears that we are not able to speak to Hotmail directly. How do we engage Hotmail to check this as I have used their forum and have had no response as yet?
Is there something else I can do please? Oh yes the SBS 2008 system is on a private 192.168.0.xxx network.