If I telnet to my exchange 2013 server and do an EHLO it returns the local server name and not the external FQDN.

Mxtoolbox.com flags this as a problem as it doesn't match my reverse DNS which is to the external FQDN.

How do I change it to return my external FQDN ?

thanks

Hello,

You can modify the "Fqdn" parameters in the Set-ReceiveConnector cmdlet:

http://technet.microsoft.com/en-us/library/bb125140.aspx

Thanks,

If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

Thanks, eventually managed to do it.

For anyone else with a single Exchange 2013 server solution then you'll need to disable 'exchange server authentication' on the 'default frontend' receive connector before you can set the FQDN.

I've done that and mailflow is fine in and out.

• Edited by ubiquitas Monday, January 14, 2013 12:20 PM
• Marked as answer by ubiquitas Monday, January 14, 2013 12:20 PM

Thanks, eventually managed to do it.

For anyone else with a single Exchange 2013 server solution then you'll need to disable 'exchange server authentication' on the 'default frontend' receive connector before you can set the FQDN.

I've done that and mailflow is fine in and out.

• Edited by ubiquitas Monday, January 14, 2013 12:20 PM
• Marked as answer by ubiquitas Monday, January 14, 2013 12:20 PM

Great post, thank you to all. For reference, the syntax used to set the FQDN is as follows:

Get-RecieveConnector "SERVER01\Default Frontend SERVER01" | Set-RecieveConnector -fqdn "remote.mydomainname.com"

Amend as required.

Thanks,

This is great article help for me, I was looking for this from so many days

Regards,

Damodar

There is a typo in the "Set-ReceiveConnector" on your post... Just an FYI.

Once I corrected the spelling I received the following error:

If the AuthMechanism attribute on a Receive connector contains the value ExchangeServer, you must set the FQDN
parameter on the Receive connector to one of the following values: the FQDN of the transport server
"EXCHANGE.home.lan", the NetBIOS name of the transport server "EXCHANGE", or $null.
    + CategoryInfo          : InvalidOperation: (EXCHANGE\Default Frontend EXCHANGE:ReceiveConnector) [Set-ReceiveConn
   ector], InvalidFqdnUnde...erAuthException
    + FullyQualifiedErrorId : [Server=EXCHANGE,RequestId=092580ef-d459-4982-a984-72c71fb87dee,TimeStamp=10/9/2014 12:5
   7:09 PM] [FailureCategory=Cmdlet-InvalidFqdnUnderExchangeServerAuthException] 949351FC,Microsoft.Exchange.Manageme
  nt.SystemConfigurationTasks.SetReceiveConnector
    + PSComputerName        : exchange.home.lan

Does anyone have suggestions?

Thanks,

Ray

Hi Ray

Have you figured this out?

Vik

Vik,

You can change the name through the mail flow/receive connectors/scoping (scroll down) in the Exchange Admin Center.   I left it as is since it was not that big of an issue for me.  If there are clear directions out there on how to do it, I might give it another shot. 

Are you looking to do the same?

Thanks,

Ray

FYI - Just tried again with the advice above about un-ticking the 'exchange server authentication' check box and it appears to have worked.  Make sure you do this on "Default Frontend servername".  Go to the scoping button on the left and scroll down to where you see the local server name and replace with your external DNS name. 

Reboot your computer and test.

I still get my local server name for the EHLO as I use a smart host for outbound mail.  Will figure this out another day unless someone else has any advice they can share.

Thanks,

Ray

• Edited by Ray Wooge 4 hours 52 minutes ago

OK. For outbound mail, repeat the same steps, but for your send connector.  Don't forget to reboot before testing.  It worked for me.

Ray

FYI - Just tried again with the advice above about un-ticking the 'exchange server authentication' check box and it appears to have worked.  Make sure you do this on "Default Frontend servername".  Go to the scoping button on the left and scroll down to where you see the local server name and replace with your external DNS name. 

Reboot your computer and test.

I still get my local server name for the EHLO as I use a smart host for outbound mail.  Will figure this out another day unless someone else has any advice they can share.

Thanks,

Ray

• Edited by Ray Wooge Wednesday, April 29, 2015 2:34 AM

FYI - Just tried again with the advice above about un-ticking the 'exchange server authentication' check box and it appears to have worked.  Make sure you do this on "Default Frontend servername".  Go to the scoping button on the left and scroll down to where you see the local server name and replace with your external DNS name. 

Reboot your computer and test.

I still get my local server name for the EHLO as I use a smart host for outbound mail.  Will figure this out another day unless someone else has any advice they can share.

Thanks,

Ray

• Edited by Ray Wooge Wednesday, April 29, 2015 2:34 AM

at EXCHANGE 2013, from my understanding , we need to change the fqdn at SendConnector, NOT ReceiveConnector ,right?

• Edited by Feng_G 4 hours 55 minutes ago

at EXCHANGE 2013, from my understanding , we need to change the fqdn at SendConnector, NOT ReceiveConnector ,right?

• Edited by Feng_G Thursday, August 13, 2015 2:32 AM

I also change on my receive connectors, otherwise the FQDN will show up. You can observe this by running a sniffer on the network and monitor your mail server IP.  The banner will show your FQDN unless you change it on your receive connector.  There are other online scanners out there that will scan the Internet for this information in which I don't agree with.