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We use Win2003 Server with MS DNS. Fairly new to DNS and can't seem to figure this out.

We have a client who has an A record pointed at an IP with a 3rd party service. Now they want to be able to send & receive email via using our service.

Currently his domain has a mx record pointing at our mail server and I want to know if I can set it up so that the will work through our service.

I have copied the record in here and changed the names etc to hopefully get some insight

Zone records - ;

@ A 111.222.333.444
@ MX 10
abc A 999.888.777.666
www A 111.222.333.444

So the 3rd party is and everything else is hosted through us. He wants to know if he can have us setup email and run it through our service at

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Set up a new zone for

Add MX records into this zone which point to the mail server on your system.

Remove the abc A record from the zone for, and put it in this new zone file (for the sake of tidiness). Obviously it will be @ A ... rather than abc A when homed in this subdomain.

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Yes, he can. You have to add a MX record for that point to you

abc MX 10

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