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What is the proper way to switch from a hosted e-mail solution to a in house exchange 2007 server?

We are switching to an in exchange environment from a hosted service.  

We asked our hosted solution to create an MX record that points to our server with a higher priority(10).  They will keep our old mx record with a lower priority(40) as a backup.

We also had our ISP create a ptr record to point to our edge server.

Is this correct?

I cannot receive or send any e-mail now. I am not sure if this is what is causing the problem.



2 Solutions
Have you opened port 25 for mail?  Is your ISP blocking port 25?  MX records of 10/40 don't really matter as not everyone follows RFC standards.  If you could have your hosted provider forward any mail they get to you that would work.

Use a machine off your network and try telneting into the mail server to make sure it is accepting connections.


lynndaly2000Author Commented:
i tried to telnet to port 25 and I can't.  I can't even ping the server from the outside. (WAN).  I have to Network cards one for internal and one for external and can ping the server from the LAN.
As DMT said, check that firewall to make sure port 25 is open, AND check your SMTP service is running. Telent to port 25 from a machine INSIDE the network to make sure you CAN talk to Exchange at all.

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