Looking for logging into the Zarafa Failed site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Zarafa Failed site. After that you can login as usual with your login credentials.
https://forum.kopano.io/topic/943/hi-can-anyone-help-me-certain-user-cannot-login-logon-failed-please-check-username-password-zarafa
https://forums.zarafa.com/showthread.php?6333-Login-failure-when-creating-IMAP-accout-for-Zarafa
https://www.synology-forum.de/showthread.html?43395-Zarafa-Webapp-und-Webaccess-Anmeldeprobleme
https://askubuntu.com/questions/490709/logon-failed-please-check-your-name-password-zarafa-on-ubuntu-server-12-04
https://help.univention.com/t/keine-anmeldung-in-zarafa-webapp-moglich/3735
https://help.univention.com/t/z-push-for-zarafa-v-2-3/4505
https://help.univention.com/t/von-zarafa-zu-kopano-klappt-nicht/4950
https://www.clearos.com/clearfoundation/social/community/user-password-change-is-not-working-with-zarafa
https://github.com/jelly/zarafa-webapp/blob/master/client/login.php
https://linux.die.net/man/1/zarafa-admin
https://github.com/1afa/sabre-zarafa/issues/5
https://forum.zentyal.org/index.php?topic=5218.0
https://pietma.com/run-and-access-zarafa/