jtomascak
asked on
Exchange SMTP domains
I need to add an addtional Authorative SMTP domain to our exchange server.
We have aquired another organization and will be moving them to our exchange server.
The question is "Can I add the new authorative domain ahead of time as long as I don't update the public MX record?" My concern is that if I create it ahead ofthe cutover date that emails from mailboxes within our exchange server will deliver the message to the new local mailbox rather than to the outside organization.
We have aquired another organization and will be moving them to our exchange server.
The question is "Can I add the new authorative domain ahead of time as long as I don't update the public MX record?" My concern is that if I create it ahead ofthe cutover date that emails from mailboxes within our exchange server will deliver the message to the new local mailbox rather than to the outside organization.
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ASKER
The question is if I setup the new domain (abc.com) on our exchange server but do not make and changes to the MX records and a user within our domain (xyz.com) sends an email to someone with an address of user@abc.com. Will the exchange transort HUB look to the public DNS for the MX record and contine to deliver it to the external organizations email server as I need it to? Or will it recognize this as an internal address within the exchange site and deliver it to the new mailbox?
In that case it will deliver to the new mailbox as it thinks it is authoritative for the domain abc.com
ASKER
You assumed correctly. And your answer is what I figured would happen.
The users are getting new AD accounts with xyz.com address as their primay SMTP and there old SMTP abc.com as a seconday so they can contine to receive emails sent to that address until they can notify everyone of the new address. Just trying to get as much done before the cutover date as I can.
Thanks
The users are getting new AD accounts with xyz.com address as their primay SMTP and there old SMTP abc.com as a seconday so they can contine to receive emails sent to that address until they can notify everyone of the new address. Just trying to get as much done before the cutover date as I can.
Thanks
If you create new authorative domain before changing the MX record you will not receive emails from external org.
1.You change your MX record of the new domain. i.e change the IP address of the A record in your external DNS.
2. Add authorative domain in your server. You will have to wait to flow the mails correctly.
Normally say 24hrs. I feel mail flow resumed within 3-6 hrs.
Please check this