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Exchange 2010 sending email as local domain account

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?

ASKER CERTIFIED SOLUTION

Shane McKeown

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Exchange_Geek

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 @microsoft.com - internally they have domains such as @dogfood.com 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.

Regards,
Exchange_Geek

rodneygray

ASKER

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.

Shane McKeown

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