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We are beginning our migration to Zimbra now in earnest. We would like to put a link on the login page to some internal documentation/FAQ/etc. I am running version 6.0.4.
Easiest thing would be to edit the /opt/zimbra/jetty-VERSION/webapps/zimbra/WEB-INF/classes/messages/ZmMsg.properties and adjust the stuff which follows the line beginning with clientLoginNotice.
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Customize Zimbra Login Page 
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