I found that with the current Version of Zimbra the Connector is not working anymore.
When trying to connect after the Installation of the app, I receive an error regarding TLSv1
When I try to communicate with zimbra via bash and openssl via TLSv1 this also won’t work anymore and it seems to be TLSv1_2 is now the minimum requirement.
I tracked this down and the issue seems to be the following:
- Zimbra4UCS uses pythonzimbra
- pythonzimbra for a long time hat TLSv1 hardcoded in its communication module
- they fixed it with this commit: https://github.com/Zimbra-Community/python-zimbra/commit/8b839143c64b0507a30a9908ff39066ae4ef5d03
- this fix, also beeing 2y old has not made it into zimbra4ucs yet
Apply the patch manually:
edit the file /usr/share/pyshared/pythonzimbra/tools/urllib2_tls.py on your UCS machine and change line 34 according to the commit linked above (simply replace TLSv1 with TLSv1_2 at the end of the line)
Caution: This may (or may not) introduce issues when updating Univention/Zimbra4UCS
It would be great if s/o at UCS could introduce a more recent version of pythonzimbra or backport the commit to get this all working again.
Thank you very much and stay healthy.