After I upgraded to Zimbra 8.6 and activated proxy/nginx I have had problems connecting IPhones and IPads to the mail server using Exchange. I get the following error on the IPhone:
Exchange-account cannot confirm account information
At the same time, I receive the following log entry in the log file /opt/zimbra/log/nginx.log
Code: Select all
2017/01/25 14:25:38 [info] 25149#0: *4266 SSL_do_handshake() failed (SSL: error:14094416:SSL routines:SSL3_READ_BYTES:sslv3 alert certificate unknown) while SSL handshaking, client: <IP address>:49864, server: mail.server.tld.default
I have no problem using Outlook on computers or the Outlook app on the IPhone/IPad, only Apples mail program seems to be displeased. I can live with that and use the Outlook app, but I then cannot get my contacts on the IPhone, they are all inside my Zimbra mail account.
Have anyone an answer for what the reason could be?