Multiple Domain Issues using Recipient Policies

Posted on 2007-10-03
Last Modified: 2010-03-06
We have an Exchange 2003 server that is hosting 3 domains through Recipient Policies. We have not really had any problems until recently where an external mail server is blocking mail from one of our domains, because it does not match the domain of our mail server.

The other issue is, we are unable to send mail from other domains.

Our setup is as follows: is our mail server

the three domains we host are, and

We have recently been unable to send mail to one of our vendors because the mail host name does not match my e-mail address of

I tried to test the problem by sending an e-mail from to the vendor, but I got the error message You do not have permission to send to this recipient.

I would like to be able to send mail from our other domains, but I also would like to have our other domains able to match the mail server, so we are not viewed as SPAM.

Let me know if this makes sense. Please help.
Question by:dugganhsp
    LVL 104

    Expert Comment

    The mail server address does not have to match the domain name of the email address. If someone is doing that kind of check then they will be rejecting a lot of email. I know of at least two servers that host in excess of 10,000 domains - one of those is at GoDaddy.

    Have you ensured that the server is setup correctly?
    There are three elements that should ideally match, at least resolve correctly - DNS (, reverse DNS (to and how the server announces itself.

    If the remote site is being very picky then the MX records may also have to match. What I do with multiple domain sites is use the same MX record for all domains.


    Author Comment

    I will try changing the mx records, so they match.

    What about the idea of sending e-mail from other domains? I currently am able to send e-mail from, but not

    LVL 104

    Accepted Solution

    The only thing that could cause a problem with that would be if someone was doing some tests on where the message has come from and failing. There is nothing in a standard SMTP installation that would stop it - it has to be additional tests.

    LVL 1

    Expert Comment

    Forced accept.

    EE Admin

    Featured Post

    Are your corporate email signatures appalling?

    Is it scary how unprofessional your email signatures look? Do users create their own terrible designs and give themselves stupid job titles? You can make this a lot easier for yourself by choosing an email signature management solution from Exclaimer today.

    Join & Write a Comment

    Check out this infographic on what you need to make a good email signature that will work perfectly for your organization.
    Local Continuous Replication is a cost effective and quick way of backing up Exchange server data. The following article describes the steps required to configure Local Continuous Replication. Also, the article tells you how to restore from a backup…
    In this video we show how to create an Accepted Domain in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Mail Flow >> Ac…
    To show how to generate a certificate request in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.:  First we need to log into the Exchange Admin Center. Navigate to the Servers >> Certificates…

    746 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    18 Experts available now in Live!

    Get 1:1 Help Now