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Recently we deployed ZCS in combination with a phpBB3 forum system. phpBB3 uses its LDAP connector to verify logins and create valid sessions. We now like to offer a seamless change for users working within ZCS to switch to the forums in phpBB3. This means that I am looking for a mechanism that allows phpBB3 to check whether a Zimbra session is valid and create a new session inside the phpBB3 system without additional login by the user.
I have looked at pre-auth, but this seems to solve the reverse problem. Does anyone have some hints for me? My idea is to modify the login og phpBB3, so the users go through a single point, thus facilitating the "session handover".
Yes, I know, I mentioned phpBB3 and this is the Zimbra forum.
Let me rephrase my question: How can a third party software verify the Zimbra session, given the fact that both applications run under the same domain? Is there any way?
Did you ever figure this out? I'm trying to do the same thing from Wordpress (verify the Zimbra session). However, my Zimbra server runs under a subdomain and my web server running Wordpress runs on the root domain, so it might not be possible.
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Connecting Zimbra with phpBB 
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