Exchange 2010 console is getting error 400 4.4.7 with mails

Asked By Glenda W Larson 80 points N/A Posted on - 10/26/2012

Hello experts,

After a week of running Exchange 2010, some mails now are having error “error 400 4.4.7 message delayed” as shown at the queue viewer. The queue viewer as has been viewed at the exchange console.

Please Help.

Thank you.

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• Question Category: Exchange Server

Best Answer by Nichols Fryman

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Answered By Vaishnav Simmons 5 points N/A #146431

Exchange 2010 console is getting error 400 4.4.7 with mails

Hi Glenda,

Try Following these steps.

Check if:

• Is there another or a separate send connector to a domain?
• If there is a separate send connector, Check if it has addition HT servers.
• Try this; send an email without smart host in the send connector.
• Lastly, checked if you are blacklisted with this link.

Hope this will help.

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• Posted on - 11/08/2012
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Answered By Nichols Fryman 15 points N/A #197423

Exchange 2010 console is getting error 400 4.4.7 with mails

Hi Glenda,
The error is because the SMTP session is not configured with the remote servers.
To resolve this error follow the steps mentioned below:
1) Click 'Start', type 'cmd' in the run window

2) Type the command 'telnet mail.server.com 25', here mail.server.com' is the name of the server
3) Type the command 'HELO local.domain.com' to specify the domain name
4) Enter your email address by typing the following command '[email protected]'
5) Enter the email address of the recipient '[email protected]'
6) You can now type your message and send it
7) Exit the command and the process is completed

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• Posted on - 11/21/2013
• Question Category: Exchange Server