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Exchange 2010 Receive Connector FQDN

Posted on 2011-02-16
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Last Modified: 2012-05-11
I'm setting up Exchange 2010 for my organization.  Clean install, no other exchange servers in the organization.  When you telnet into port 25 the internal server name is displayed.  I realize you change this in the "Default <Server Name>" properties.  But the system won't let me, it has to match the FQDN of the transport server; which i believe is the FQDN of the server itself.

Server is running the typical CAS, HT and Mailbox roles.

So how do I do this?  I obviously don't want to broadcast to the world my internal information.

Also, in the message options of e-mails it also shows the internal IP of the server.  How do I correct this too?
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Question by:Railroad
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LVL 12

Expert Comment

by:Sommerblink
ID: 34913300
In EMC,

Go to Server Configuration / Hub Transport / Receive Connector and right-click on your SMTP connector, choose Properties.

Then under "Specify the FQDN this connector will provide in reponse to HELO or EHLO:"
Type in the FQDN for your external IP address.

In some cases, the server listed her MUST match the PTR record for your external IP address.
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Author Comment

by:Railroad
ID: 34913489
Yes and as my OP stated I get an error when changing this.  See the attached image.    
FQDN-Error.jpg
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LVL 12

Accepted Solution

by:
Sommerblink earned 2000 total points
ID: 34914021
You need to create a new recieve connector, solely for anonymous access. There will be no other security settings or restrictions set to it.

This connector only purpose in life will be to receive email from the outside world, via SMTP
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Author Comment

by:Railroad
ID: 34915441
Ok, so when I do this is complains about over lapping IP range/port with the Default Connector.  So this is what I did, please let me know if this is the best practice.

1) Moved Default to port 50 (Don't like deleting stuff at first)
2) Setup an Anonymous connector, allowing just anonymous connections
3) Setup an Exchange Servers connector, allowing Exchange servers Auth. on just my internal IP scheme.

Does this sound correct?
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LVL 12

Expert Comment

by:Sommerblink
ID: 34920465
It sounds OK.

Question, are you able to send/receive email on the internet and also have your outlook clients connect to exchange?
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Author Comment

by:Railroad
ID: 34920705
I haven't tried having outlook client connect, but based on the configurations of the different receivers, it should work.  I do have another receiver that is just for the clients.
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Author Closing Comment

by:Railroad
ID: 34920728
Ah... Why do I have to supply an reason?  It was answered, hence why I am awarding points.
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