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Urgent help please?

I can't send email from to and from the outside world in Exchange 2003? I am working on a box that someone else configured, the AD default is mail.domain.local. I created a new MX record in this zone and named it mail.domain.com

Should I create a new domain zone with the MX record I created and put it there?

Do I need to create a recipient policy because the primary SMTP address is mail.domain.local and not mail.domain.com?
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zulumon14
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zulumon14
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1 Solution
 
mass2612Commented:
Hi,

Please delete your duplicate questions.

Most MX records are hosted on the ISP's DNS servers. Did you have the ISP create a host record and MX record with reverse DNS pointers, etc? You can test you MX record here: -
http://www.zmailer.org/mxverify.html

You should also update your SMTP banner so it announces itself as mail.domain.com.
DNS, Reverse DNS and MX Records
http://www.amset.info/exchange/dnsconfig.asp

Yes you need to create a recipient policy to assign your users a valid domain.com address so that they can send/recieve on the Internet. domain.local is not valid on the Internet side.


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zulumon14Author Commented:
When you create the MX record, it asks you for the host as well as an IP address? Or am I just getting confused at the moment.

Also when I created the SMTP connector, I used the DNS server of the ISP, is that correct?
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mass2612Commented:
It would be very rare for you to create an MX record on your DNS servers. The MX record needs to be accessible from the Internet so you need to have this configured on a Internet facing DNS server that's why its normally on the ISP's DNS server.

Yes. You normally create a host record for the MX record and then the MX record so yes that's normal.

Are you talking about the smarthost setting on the DNS server or DNS? You don't need to register the DNS servers under the SMTP connector properties as long as the Exchange server can complete a DNS lookup to external domains successfully.
i.e. nslookup -type=mx yahoo.com
telnet 216.39.53.1 25

If they work without it then the DNS entry on the connector is not required.

http://www.amset.info/exchange/smtp-connector.asp
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zulumon14Author Commented:
In the SMTP connector, I enabled the smart host option for all email to route through the ISP address
[205.x.x.x] is this correct or should the IP be the private IP on the exchange box?
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mass2612Commented:
A smarthost is a server or device that routes mail from your internal organisation to the Internet. It acts as your SMTP gateway. Is the 205.x.x.x your ISP valid IP address of their smarthost? If so then that's what you should use.  
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zulumon14Author Commented:
That is the the communcations provider IP address into this network. Or should it be there default gateway address?
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mass2612Commented:
Can you telnet to port 25 on the IP address you have added as a smarthost? Do you understand what a smarthost does?

telnet 205.x.x.x 25
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zulumon14Author Commented:
I am not actually at the server a the moment. My understanding of a SMTP connector smarthost functionality is that it routes all email to the ISP. Am I wrong?
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mass2612Commented:
That's correct. You are right. So the smarthost needs to be able to accept SMTP connections from the Exchange server. It sounds like you are on the right path.
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zulumon14Author Commented:
OK, so the IP address I would utilize would be the ISP" s and not the internal server IP?
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mass2612Commented:
Yes. That's right. Otherwise you would simply be forwarding the mail back to yourself. A smarthost is an external device/server that forwards mail to the Internet. If your Exchange server cannot directly forward mail to the Internet then it needs to use a smarthost.
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zulumon14Author Commented:
I am totally lost, When I try to send emails, I am getting host unknown. I know what that means but how do I correct it DNS. Step by Step will ne helpful
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