Fix preauth redirection

1. Zimbra Tech Center
2. Certified
3. Fix preauth redirection

How to fix preauth redirection problem

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Problem

After successfully authenticating with the username and password to the login page, get a ERROR 400 Bad Request.If zimbra is configured with a zimbra domain PreAuth key.

HTTP ERROR 400 Bad Request
URI: /service/preauth
STATUS: 400
MESSAGE: Bad Request
SERVLET: PreAuthServlet 

After refresh the page two times, get below error.

HTTP ERROR 400 authtoken is invalid
URI: /service/preauth
STATUS: 400
MESSAGE: authtoken is invalid
SERVLET: PreAuthServlet 

Solution

public service hostname should be configured.

To fix this problem use the value from zimbraPublicServiceHostname as redirect url.

Steps for Global Level Config

su - zimbra 
zmprov mcf zimbraPublicServiceHostname MAIL.DOMAIN.COM
zmcontrol restart

Steps for Domain Level Config

su - zimbra 
zmprov md DOMAIN.COM zimbraPublicServiceHostname MAIL.DOMAIN.COM
zmcontrol restart

If must use a different url, then provide an FQDN in zimbra_allowed_redirect_url.

Submitted by: Aditya Patidar