Exchange 2010 not receiving external mail | Step by step

One quite common problem that administrators might encounter is this:

Scenario: Exchange 2010 environment. The external mails are not being received, and if someone from the organization sends an e-mail to an external receipt it works with no problems.

Cause: Forced reboot / Power down

1. The first step that probably all administrators will do is to check what is happening to those e-mails that are received. Send a test mail from an external e-mail address ( like gmail / yahoo ) to your internal e-mail address, and then go to EMC ( Exchange Management Console ), then click on Toolbox in the right menu, and after that double-click on Message Tracking. A new ie window will appear, and you will be prompted for login. After that go to: search for messages i’ve received from select user / and enter the address from were you made the test. Then click OK.

The search results will appear, and then double click on the test message for details. If the delivery report looks like this, go to step 2:

Delivery Report for Aurel Proorocu

Failed
6/27/2011 10:03
The message couldn’t be delivered.

2. Go to Start services.msc / press enter:

3. After the Services window appears, search for Microsoft Exchange Transport, then right-click on it and select restart.

4. Then after the service is restarted repeat the external mail test and it should be ok.

ENJOY.

And if you encounter any problems feel free to comment contact me.

11 thoughts on “Exchange 2010 not receiving external mail | Step by step

  1. shekeb

    Hi there,

    I have problem with receiving external mail they are coming hours laters . ( exchange server 2010)
    via Toolbar, mail flow is empty. no error code. Intern mails coming very soon

    Thanks

  2. ola soyemi

    hi, i did everything you instructed but still having the same issues.
    The issue is that some mails can receive external mails while some cannot. Actually our domain was registered again with another domain name and any emails added after the new config that cannot receive external mails.

  3. sebenzile

    I am using exchange server 2010 incoming and outgoing emails are not working externally but internal sending and receiving are working fine

  4. Nazanin

    Hi
    I have the same problem in 2 weeks, i don’t have any problem in internal mails.
    But emails from external like gmail and yahoo will receive by delay of 5 or 6 hours , i have exchange 2013 .

  5. Freddy

    Hi,

    I encountered the same situation just now. noticing C drive in the Front End server had only 3GB left. after I cleaned up the space, all the external email traffic can be received.

    I am on Exchange 2010.

    just wonder if 3 GB free is not enough for the front end? is there any KB about the space requirement?

    Thanks.

  6. djmel

    hi please can anyone help to my issue below please

    Error Icon
    Message not delivered
    Your message couldn’t be delivered to mwright@revenue.gov.ws because the remote server is misconfigured. See technical details below for more information.
    The response from the remote server was:
    550 5.7.1 Unable to relay for mwright@revenue.gov.ws

    Final-Recipient: rfc822; mwright@revenue.gov.ws
    Action: failed
    Status: 5.7.1
    Remote-MTA: dns; mail.revenue.gov.ws. (110.5.112.75, the server for the domain revenue.gov.ws.)
    Diagnostic-Code: smtp; 550 5.7.1 Unable to relay for mwright@revenue.gov.ws
    Last-Attempt-Date: Wed, 28 Jun 2017 03:38:35 -0700 (PDT)

    ———- Forwarded message ———-
    From: Djmel Wright
    To: Melbourne Wright
    Cc:
    Bcc:
    Date: Wed, 28 Jun 2017 23:38:32 +1300
    Subject:
    test

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