LesmanyNunez
asked on
Exchange Changing ISP
I have an exchange server onsite,I use Google APPs for Postini to filter all the spam. The MX would remain at Google / Postini. since that is our filter, but were can i change the external IP address to the exchange server once i get the new set of IP's.
ASKER
all im doing is changing ISP, from what i can understand how this was setup, i would only have to change the external public ip to the exchange server, i guess my question is i would only have to change it in the firewall or in postini itself.
If the public IP is defined anywhere on the firewall, then it's most likely the case that you'd need to update it. Besides - If you're switching ISPs and therefore getting new IP Addresses, then there's no reason to have the old IPs sitting around in your firewall.
As far as Postini ... I am not sure how it gets configured. If it only uses the DNS name, then there's no IP to update on their end, but you'd need to update your public DNS.
If the only thing that is changing is your IP Address, then anywhere you have a reference to the old IP, should be updated with the new IP.
As far as Postini ... I am not sure how it gets configured. If it only uses the DNS name, then there's no IP to update on their end, but you'd need to update your public DNS.
If the only thing that is changing is your IP Address, then anywhere you have a reference to the old IP, should be updated with the new IP.
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
If the firewall is static then that needs to be updated with the new IP. Also postini will need to be updated as well because the MX and A records are resolving to the old address. That should take care of it
SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
Spoke with google, according to them i need to change the IP destination on their side so the email flow will resume, also Godaddy will need to update the A records and do a reverse dns on their ends. thank you guys for the help. that helped me clear out a few things, i was really confused since is the first time using postini.
But be careful - if your Exchange server is on-site, then most likely you have some firewall rules set up, based on the current IPs. If you're changing the IP of your server (rather than just the DNS name), then you'll probably need to update the firewall rules as well.