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 Topic: Exchange 2010 EWS Mangled when proxied via 2.4.4 |
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acsheehy
Joined: 05 Apr 2013
Posts: 1
Location: UK, London
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 Posted: Wed 17 Apr '13 9:34 Post subject: Exchange 2010 EWS Mangled when proxied via 2.4.4 |
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Own Build Apache 2.4.4 (32bit) with IPv6 support Openssl 1.0.1e on Windows Server 2012.
We implemented this as a reverse proxy with Exchange 2010 behind it. We published Webmail out through Apache. Thought it was going well until users reported strange things. Exchange Web Services users were sending email and they arrived having been posted from another user's mailbox. Also, sometimes viewing the mailbox provides a view of somebody else's mailbox.
We checked out the logs on the Exchange CAS server and what appears to be happening is that the body of the post is being sent with the header of another post.
I am freaking out over this because had we fully implemented this it would have been my head.
Does anyone have any idea what is going on? |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7298
Location: Germany, Next to Hamburg
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| Posted: Tue 23 Apr '13 10:51 Post subject: |
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| Can you please post the config of your reverse proxy? |
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jraute
Joined: 13 Sep 2013
Posts: 188
Location: Rheinland, Germany
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| Posted: Tue 17 Sep '13 15:07 Post subject: Solution for apache reverse proxy / exchange mail sync |
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Yes, this phenomenon is known, but there is a solution:
(It seems to be some kind of session problem.)
The trick is to use SetEnv proxy-initial-not-pooled
example apache reverse proxy configuration for exchange (OWA, ActiveSync):
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EnableMMAP Off
EnableSendfile Off
AcceptFilter http none
AcceptFilter https none
<VirtualHost *:443>
[...]
<Location /exchange>
ProxyPreserveHost On
ProxyPass http://yourserver/exchange
ProxyPassReverse http://yourserver/exchange
SetEnv proxy-initial-not-pooled
SetEnvIf User-Agent ".*MSIE.*" value BrowserMSIE
Header unset WWW-Authenticate
Header add WWW-Authenticate "Basic realm=server.mydomain.com"
Header append Vary User-Agent env=!dont-vary
</Location>
<Location /exchweb>
ProxyPreserveHost On
ProxyPass http://yourserver/exchweb
ProxyPassReverse http://yourserver/exchweb
SetEnv proxy-initial-not-pooled
SetEnvIf User-Agent ".*MSIE.*" value BrowserMSIE
Header unset WWW-Authenticate
Header add WWW-Authenticate "Basic realm=server.mydomain.com"
Header append Vary User-Agent env=!dont-vary
</Location>
<Location /public>
ProxyPreserveHost On
ProxyPass http://yourserver/public
ProxyPassReverse http://yourserver/public
SetEnv proxy-initial-not-pooled
SetEnvIf User-Agent ".*MSIE.*" value BrowserMSIE
Header unset WWW-Authenticate
Header add WWW-Authenticate "Basic realm=server.mydomain.com"
Header append Vary User-Agent env=!dont-vary
</Location>
<Location /Microsoft-Server-ActiveSync>
ProxyPreserveHost On
ProxyPass http://yourserver/Microsoft-Server-ActiveSync
ProxyPassReverse http://yourserver/Microsoft-Server-ActiveSync
SetEnv proxy-initial-not-pooled
SetEnvIf User-Agent ".*MSIE.*" value BrowserMSIE
Header unset WWW-Authenticate
Header add WWW-Authenticate "Basic realm=server.mydomain.com"
Header append Vary User-Agent env=!dont-vary
</Location>
</VirtualHost>
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(i don't know if this is elegant code, but it works!) |
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