- Zimbra Collaboration 8.6 Patch 9 now available (includes fix for CVE-2017-8802). Read the announcement.
- Zimbra Collaboration 8.8.7 + Zimbra Connector for Outlook 8.8.7 are available.. Read the announcement.
- Are you a Zimbra Developer? You can find some interesting stuff in our Official GitHub: https://github.com/Zimbra and check the Community Projects too: https://github.com/Zimbra-Community/
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- Fri Apr 26, 2019 8:12 pm
- Forum: Error Reports
- Topic: Webmail.unseen.is error 502
- Replies: 1
- Views: 1219
HTTP ERROR 502 Problem accessing ZCS upstream server. Cannot connect to the ZCS upstream server. Connection is refused. Possible reasons: upstream server is unreachable upstream server is currently being upgraded upstream server is down Please contact your ZCS administrator to fix the problem. Power...