Best way to add o365 urls as exception in IE10 preferences for GPO?

have a few hundred urls and ips i need to add as exception in GPO for o365.  Were using preferences in control panel.   Is there a limit?  Better way?
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Gary DewrellConnect With a Mentor Senior Network AdministratorCommented:
You should be able to create proxy exception rules in your proxy configuration. For example for TMG I have a object created that holds all the O365 URLs and IPS name O365Addresses.

Then I have a rule that says to basically allow all internal users anonymous access to O365Addresses.

Much easier to manage than trying to do it via GPO.
Vasil Michev (MVP)Connect With a Mentor Commented:
Those need to be added to your proxy/firewall lists, not IE.
Gary DewrellSenior Network AdministratorCommented:
What exactly are you trying to accomplish. You could use a GPO to add them to the PROXY Bypass list in IE but Vasil is correct that it would be much better to add them at the Proxy/Firewall.

Their is generally no need to add them to the zone list in IE.
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CHI-LTDAuthor Commented:
sorry thats what i mean, add them to the GPO IE exception list.  Surely there is a limit?
Gary DewrellConnect With a Mentor Senior Network AdministratorCommented:
The maximum characters is 2064. Anything over this will be truncated. Secondly this would not be a good idea anyway. You really should use a Proxy/Firewall rule to just allow outbound to any of the above addresses.
CHI-LTDAuthor Commented:
Right ok.  Well all machines point to the proxy, so if changes were made to the firewall then clients are still going to go via the proxy unless we make major changes to it..?
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