Hi,

We have an internal abc.net domain which is not resolve able in internet and want to deploy exchange server with abc.com name that we also have and is resolve able in internet.

the problem is we have Active Directory service for abc.net and all user accounts have .net suffix.

is it possible to deploy exchange for .com and link them together? and define user@abc.com mail addresses for abc.net domain users?

what should I do to design such mail flow?

please help me through this,

Thanks in advance.

Hello

tip: open ecp -->mail flow -->accepted domains ->add new accepted domain /Authoritative/ and go to email address policy --> edit default policy --> add new email address format check make this format..
and if not have create new send conector.

Hi MAK,

Thank you for your question.

I agree with Sneffs suggestion.

In addition, after we edit default policy into abc.com, we should navigate to Recipient and click refresh, then we will the email address of all users which have changed to user@abc.com. We could refer to the following link:

https://technet.microsoft.com/en-us/library/bb124423(v=exchg.150).aspx

the optional is that we could use the following command:

New-AcceptedDomain -Name "abc.com" -DomainName abc.com -DomainType Authoritative

Set-EmailAddressPolicy "Default Policy" -EnabledEmailAddressTemplates SMTP:@abc.com,smtp:@abc.net

Then navigate to Recipient and click refresh.

If there are any questions regarding this issue, please be free to let me know. 

Best Regard,

Jim

Hi ,

Yes it's possible .

In addition to the given suggestions ,please have a look in to the below points too.

On Public DNS : 

1.First we need to register the domain abc.com by getting the help from your ISP .

2.Then we need to create the Host A records for the services like owa,pop,imap,activesync and outlook anywhere

Host A record - > webmail.abc.com

3.Then create the Host A record for the autodiscover service .

Host A record -> autodiscover.abc.com

4.Then we need to create the Host A records for your gateway products .

Host A record - > mail1.abc.com

5.Then we need to create the pointer record for the above HOST A record .

6.Then we need to create the MX record by mapping the HOST A record created on the 4th step.

7.Then we need to create the SPF record for the domain abc.com to avoid spoofing of your own domain name suffix.

On exchange server : 

1.We need to have a forward lookup zone for abc.com on your internal active directory dns .

2.Then we need to create the Host A record for the services like owa,pop,imap,activesync and outlook anywhere

Host A record - > webmail.abc.com

3.Then create the Host A record for the autodiscover service .

Host A record -> autodiscover.abc.com

4.you can point both the Host A records to the ip address of the LB or else to an individual cas server.

5.Then we need to configure the external and internal urls for the exchange .

6.Make sure the names going to be used for the exchange services are available on the SAN certificate.

Mail Flow : 

1.on the exchange servers add the domain suffix "abc.com" as an authoritative domain on the accepted domain list.

2.Then create a email address policy for the domain abc.com and apply that to your recipients.

Thank You all for your helpful answers..

I should get to work and try the configurations you suggested.

will get help again if had problem...

Thank you again.