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2 exchange servers

Zantis
Zantis asked
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Last Modified: 2010-03-06
I currently have two exchange servers running.  One is an old server that is being replaced.  I have a question on when email comes in the dns for each domain points to the old email server.  Now if I move a mailbox to the new server that has jon@zantisworks.com and I have another mailbox still on the old server that also uses the @zantisworks.com domain are they both going to get delivered?  The DNS record doesn't point to the new server yet.  Should it be pointed to both and have two MX records?
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Commented:
Is this a migration to a new server or a whole new server without retaining old email?  Are you wanting it to flow to both?

I would assume you have a firewall in place in front of your Exchange.  If so, don't mess with DNS, change your firewall NAT to direct external IP to new internal IP for new server, test mail flow.  Some firewalls like PIX will want you to clear translations and such after the change.

Steve

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