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Microsoft Exchange Server DNS

Hi,

I have deployed Exchange server 2007 and all is working well (I can send email and OWA is working).

In order to recieve mail on the exchange server I just want to check the procedure I am going to take will actually work: -

Our domain is held externally so I change the MX records at the domain holder to point to our external IP address of the router - from their setup port 25 (smtp) to point to the internal address of our exchange server?

I think this will work but as mentioned just wanted to make sure.

Thanks,
Toby
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tobydonald
Asked:
tobydonald
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1 Solution
 
farazhkhanCommented:
Hi,

" I change the MX records at the domain holder to point to our external IP address of the router - from their setup port 25 (smtp) to point to the internal address of our exchange server?"

Absolutely correct!

Regards,
Faraz H. Khan
0
 
farazhkhanCommented:
Hi,

But make sure you have already configured these things as mentioned here:
http://www.petri.co.il/configure-exchange-2007-recieve-email-other-domains.htm
or
http://msexchangeteam.com/archive/2006/11/17/431555.aspx

Regards,
Faraz H. Khan
0
 
Glen KnightCommented:
There are a few things you need to do.

You need to create a rDNS record.  Contact your ISP and tell then you need a reverse DNS configured for your IP Address.

You also need to configure an SPF record. See here: http://www.microsoft.com/mscorp/safety/content/technologies/senderid/wizard/
Once you have the details you need to contact whoever hosts your external DNS and have them setup a TXT record with the information you get from the wizard.

You then need to setup an MX record for your domain that points to an A record (mail.yourdomain.com for example) the A record needs to be configured with the external IP address of your Exchange Server.  Goto http://whatsmyip.org to find out what this is.
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tobydonaldAuthor Commented:
Hi,

Thanks for the quick replys!

Our email domain is semplice.co.uk but our internal domain is called sempliceenergy.office - will this cause me to have to make some changes?

Is it neccessary to configure an SPF record?

Thanks,
toby
0
 
farazhkhanCommented:
Hi,

Q: Our email domain is semplice.co.uk but our internal domain is called sempliceenergy.office - will this cause me to have to make some changes?

Ans: At Exchange level, By default, your new Exchange 2007 servers will only accept email destined to the Windows domain that the server was a member of. In order to accept email destined to your external SMTP domain semplice.co.uk, you will probably need to create a new accepted domain. This is done in the Exchange Management Console under Organization Configuration -> Hub Transport, then select Accepted Domains.

Q: Is it neccessary to configure an SPF record?
Ans: Most of the public mail servers like hotmail requires SPF records for the mails to be sent to them, so it will be better to create SPF records as well. Use http://www.openspf.org/ and enter domain details there for creating TXT record, then ask your DNS provider to add this record for you.

Regards,
Faraz H. Khan
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tobydonaldAuthor Commented:
Hi Faraz,

Thanks - I have the accepted domain setup and working

SPF Record - I can send email perfectly from my exchange server (I have been testing it with a hotmail account and I have had no problems)

To now recieve email on my exchange server all i need to do is change my MX records at my domain holder to the static external IP of my router then setup port fowarding (port 25 to the internal address of the server)?

Is this correct?

Thanks,
Toby
0
 
farazhkhanCommented:
Hi,

"To now recieve email on my exchange server all i need to do is change my MX records at my domain holder to the static external IP of my router then setup port fowarding (port 25 to the internal address of the server)?"

Ans: Absolutely Correct!

Regards,
Faraz H. Khan
0

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