Hi All
Im stuck as i've tried all possible options (in my point of view) so i hope some one of you have a trick left in the pocket ;-).
I have to establish a Free Busy Federation between two exchange environments.
Source (This users tries to get the data displayed) = Exchange 2013 (customer partner environment)
Target (Mailbox where i want to query Free Busy data from) = Exchange 2019 (my enviornment)
We both use the Microsoft Federation Gateway as our FederationTrust endpoint and therefore have set the the InternetWebProxy setting on every Exchange Server.
Set-ExchangeServer -InternetWebProxy "http://proxy:port/" -InternetWebProxyBypassList
I, on the Exchange 2019 can easly define the bypass list with the InternetWebProxyBypassList.. but this is not possible for the partner environment with their Exchange 2013.
as this is the first time i had to configure the the InternetWebProxy on an Exchange 2013, I just asumed it will use the netsh winhttp proxy settings, so we defined the proxy and bypass list with
netsh winhttp set proxy proxy-server="proxy:port" bypass-list="domain1;domain2;etc."
we restarted iis as well as the exchange server.
As we have multiple exchange servers as source, we only did this settings on one exchange server - the one the test user (source) is hosted (the mailboxdatabase is mounted on this server we try to bypass the proxy).
as did not worked.. - we still see the autodiscover requests hitting the proxy server.. i found the following:
https://docs.microsoft.com/de-de/archive/blogs/appssrv/proxying-cas-http-cross-forest-availability-requests
so I instructed the partner to update the two web.config files in
- ..\Program Files\Microsoft\Exchange Server\ClientAccess\exchweb\ews
- ..\Program Files\Microsoft\Exchange Server\ClientAccess\Autodiscover
with the following
<system.net> <defaultProxy> <proxy
usesystemdefault = "false"
proxyaddress = "http://proxy:port"
bypassonlocal = "true"
/> <bypasslist> <add address=".*\.domain1\.com" /> <add address=".*\.domain2\.com" /><add address=".*\.domain3\.com" /><add address=".*\.domain4\.com" /><add address=".*\.(com|org)\.domain5\.com" /></bypasslist> </defaultProxy> </system.net> rebooted the server but still we see the traffic going to the proxy.
so, if any one knows where exchange 2013 needs his proxy bypass list configured.. please let me know as i dont know more places to add it
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