2 Exchange Servers, 2 Domains, Outlook client has security issues

Following on from my other exchange questions, I now have another problem.

I have 2 exchange servers
both are in different domains but on the same LAN (original mail server = domain1.com and new mail server = domain2.com)

I need my outlook clients to have both e-mail accounts showing at the same time.

I have almost got this working, other than every time I open Outlook I get a prompt for username and password for the domain2 server (the new one)
If I use the domain admin username and password (domain admin for the domain2 new exchange box that is) it will allow the mailbox to open, but I'm not sure it's a great idea to have all users collecting their mail from an account that is connected using domain admin security.

Is there a way to make outlook connect to the second domain's exchange server seamlessly?
dangermouse1977Asked:
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hecgomrecCommented:
What is the outlook version 2007, 2010 or 2013.?

2007 doesn't allow you to have 2 exchange accounts at the same time, but one could be IMAP.

For 2010 and 2013 you just have to add another account on the profile you need.

Now, because both of your emails are on the same LAN but different networks, if your DNS is not set properly or there is not a valid route to the other network your autodiscover may not find the account.  Remember you can always setup the account manually and put specific info for the server.  I'm assuming you have autodiscover installed for both of your Exchange servers and they are 2007 or older.


If you can access owa for both of your servers without a problem, must likely you can have both email addresses in one profile.  It will be represented with the "username@domain_name.com" format.
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dangermouse1977Author Commented:
It was a DNS issue, now sorted... Thanks for the assist.
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