Exchange 2010 sending email as local domain account

Posted on 2012-08-13
Last Modified: 2012-08-14
I get the following error when sending mail to a user outside the local domain.

Can someone tell me where the magic check box is that I am missing?
Question by:rodneygray
    LVL 24

    Accepted Solution

    You can't use tmrc.local to send external email
    You need to have a public domain name to send email - otherwise the receiver can't know how to reply

    I assume you have an actual email domain? perhaps?

    Open Exchange management console - Org config - Hub  transport
    Check the Email Address policy tab
    You need to edit the email address policy to use whatever your domain is)
    Its currently using tmrc.local

    Can you check?
    LVL 33

    Expert Comment

    Understand a simple concept, when you try to send an email to say gmail - and gmail would try to query DNS records of your internal domain - how can it work? Likewise, if you want to query someone' else internal domain - how would an internet facing DNS Server leak your internal DNS queries.

    Practically every internal domain has IPs such 192.168.x.x - does this mean that all the domains are alike - that'll be unfair to make a statement.

    Even Microsoft has internal domains configured for their own administration, so what you see as - internally they have domains such as etc.

    Hence, you would require an internet domain and most importantly, they should be all pointing towards your public facing IP of your firewall.

    If you are unclear, please post your feedback.

    LVL 1

    Author Closing Comment

    When I tried to do this it didn't work but it did give me the error I needed to figure out what was going on. I had to add my domain as an Accepted Domain then update the Default Policy.
    Thank you for pointing me in the right direction.
    LVL 24

    Expert Comment

    Forgot about Accepted domain apologies...glad you are back in action anyways, cheers!

    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

    Suggested Solutions

    New Windows 7 Installations take days for Windows-Updates to show up and install. This can easily be fixed. I have finally decided to write an article because this seems to get asked several times a day lately. This Article and the Links apply to…
    "Migrate" an SMTP relay receive connector to a new server using info from an old server.
    This tutorial will walk an individual through the process of transferring the five major, necessary Active Directory Roles, commonly referred to as the FSMO roles to another domain controller. Log onto the new domain controller with a user account t…
    This video discusses moving either the default database or any database to a new volume.

    754 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

    19 Experts available now in Live!

    Get 1:1 Help Now