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Changing MX record

We currently have an outside company hosting our emails, we now want to move to our own exchange server. My question is: Is there a way to change MX record to point to our exchange server, and not have to wait for it to propagate thru the internet. I dont want my users with out emails for 24 hours. Can I use the same mx record that is there now but with my IP address that point to the exchange?
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dbautista
Asked:
dbautista
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2 Solutions
 
btassureCommented:
You will just have to wait I'm afraid. The record that is there will still need to propagate if you change the ip address to which it points. You might be better to change it anyway and have your ISP forward all your mails to the exchange server for 24 hours or so. It rarely takes that long to spread out though. Emails will start working immediately within your mx domain and anyone else who is using your domain provider's dns servers and will likely have completed spreading within 3 or 4 hours
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btassureCommented:
Do it at your lowest usage point of the night so the fewest people are affected
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redseatechnologiesCommented:
How do you get mail from your hosting company now?

I would setup a POP3 connector to download mail in the interim - don't kid yourself though, it will take up to 48 hours to complete worldwide.

-red
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btassureCommented:
There is no pop3 connector built into exchange2003 - you will need to buy one or get a dodgy freeware one
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redseatechnologiesCommented:
Sorry, did I suggest it was built in?  Considering you can get a "good" cheap one for less than $100, even if you only use it for 48 hours, that is just over $2 an hour to not have to worry about your users not getting mail.
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btassureCommented:
Good point :o)
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redseatechnologiesCommented:
When a frugal scumbag like me suggests spending money, it is usually worth it ;)
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dbautistaAuthor Commented:
All of your suggestions are good, but can I add a new mx record pointing to my exchange with a lower priory leave the existing one wait 48 hours and then remove the one from my Email hosting company will this work with out downtime?
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btassureCommented:
The new one will still have to propagate. Same problem :o(
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dbautistaAuthor Commented:
Thank You guys, I guess the users have to deal with the downtime!
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