How to receive emails from multiple domain names.
I have one exchange server (2003) and I want to receive email from two different domain names. My primary domain name is working fine. Network solutions is hosting my names I have changed my default recipient policy as per MS tech article and have restarted the information service. I have added an email address for the second domain to one of my users. I can send an email internally to the new domain and it works fine. However, If I try to send it from an address external to my network, it will not deliver. It says that my primary domain was unable to relay it.
August 24th, 2007 5:31pm

your MX Record related for the new domain should point to the same External IP address of your first domain. did you ckecked that ? If you are hosting two domains with the same external IP address, then you need to add a new MX record for your new domain to point to the same IP address of your first MX record.
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August 24th, 2007 11:08pm

Yes, I have the second mx record setup exactly like the first. They both point to the same external IP address. The bounceback says it was unable to relay.
August 27th, 2007 10:20pm

What Device stated it could not relay?Are you sure it was your Exchange Server? Do you have any firewalls/e-mail firewalls/SMTP Security devices between the internet and the Exchange Server?
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August 28th, 2007 12:51am

I tried sending an email message externally from a yahoo mail account. It states; 70.61.124.58 does not like recipient. Remote host said; unable to relay for steve@dunringil.com giving up. I checked the MX record, mx lookup and that seems fine. There should be no firewall concerns since the email comes in fine for the primary exchange domain eliznc.com stysinger@eliznc.com on the same IP
August 28th, 2007 11:58pm

Hold on dude I just reviewed your first blog again, you were saying : (I have changed my default recipient policy as per MS tech article and have restarted the information service. I have added an email address for the second domain to one of my users) why you added a second domain to one of your users ? when you add the new domain to be hosted in your exchange and you create a new Email Address Policy or modified the existing default one , then a message will appear which will ask you if you would like to update all mailbox enabled or mail enabled users / accounts ( i think) with this new email policy, so , you should been chosen yes to update all your users with this new email poliy, then you should find the secondary smtp address added to the user proxy addresses attributes, and it will appear under email addres tab under user properties did you update all your users with the new email policy ? or you skipped it ? another thing, there should be an option while creating or modifing the default email policy where it says: (This Exchange Organization is responsible for all mail delivery to this address.) did you check that option when you created the email policy ? can you recieve emails internally for this new domain ? when you send an email, right the full SMTP address of the user using the new domain address, and see if your outlook can resolve the actual display name of the user from your GAL. final thing, check some users to see if the new email domain was added successfully as secondary domain under thier SMTP addresses. let me know the update please, Regards Alaa
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August 29th, 2007 1:21am

I did not want the domain added to everyones email addresses so I chose no. Then I updated one manually. IN an effort to try your solution; Today, I deleted the @dunringil.com from the recipient policy and readded it. Then I applied the policy. Now when I look at the user's email addresses, there is one in there for the new domain on everyones property page/email tab. Still when I try to send email from an external location I get a bounceback. If I send it internally it works fine. What did you mean by "full smtp address" I am sending email to steve@dunringil.com Oh, yes the check box is checked for using exchange for all email at the address.
August 29th, 2007 4:06pm

well if you can recieve emails through your new email domain internally then your exchange organization has no problem in recieving emails on the new domain, now the problem for sure is from the external side, you have to check yoru firewall settings, and you have to check if you can resolve your new domain from external and all the public IP address(es) registered for the new domain are correct. try from outside your network to resolve the new domain, and check the IP address registered for the new domain, this IP address should point to your external firewall and your external firewall should pass any request comes on port 25 for this IP address to your internal exchange or internal network, assumes that you have an internal antispam that recieves all external emails for checking. then from this antispam, you have to forward all cleaned emails to your internal exchange. in other words, you have to check the communicatin from outisde for your new email domain. please let me know if you still have a problem. Regards Alaa Al-ankar
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September 1st, 2007 1:01am

I must be missing something obvious here. I had this working in the past, but I changed my secondary domain name. So I went back and set everything up like I had it with the new domain name. Or so I thought. I am using ISA server as my firewall. I looked through all the settings and found nothing that would block the email.I am also using IMF and I added my new domain as an exception, just in case it thought it was spam. networksolutions is hosting my dns record. When I resolve my secondary domain name "dunringil.com" it returns mail.dunringil.com Is this correct or should it return my primary domain: mail.eliznc.com
September 4th, 2007 5:54pm

did you ever get this resolved sound like you need to create an a record to go with the mx record and a ptr the ptr will point to the ip address and the a record will resolve the hostname to ipaddress. Rob
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January 22nd, 2008 4:44am

check e-mail relay settings and user names and passwords. maybe u need to add UPN suffix. check the default send connector and see who is allowed to send.
January 24th, 2008 7:30pm

What we are trying to do. Tim wants to receive mail at the following addressed. tim@domain.com this is the currant account. tim@otherdomain.com this is the other email address he wants to receive email at. I set up recipient policy to catch @otherdomain.com. I can send mail locally. I can not get mail to hit my server yet. In General:When i reply to a message. Can i select which email address is in the from when i send or reply to a message?
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January 25th, 2008 9:07am

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