I just upgrade our server to latest 8.6 Network Edition. Now we are facing issue where client will not able to login to webmail using http with error "Oops! It appears your browser does not allow cookies. You need to enable cookies in order to use the Zimbra Web Client.". but they will not have any issue when they login using https. due to our server is hosting few domains for different users, we cannot ask them to use https as they will get ssl error. i have check the cookie is enabled inside the browser, this only happened after i upgrade the server to 8.6.
from nginx log i can see:
2015/02/08 20:49:01 [info] 15838#0: *181 client prematurely closed connection while reading client request line, client: 220.127.116.11:56520, server: mail.myserver.com.default
Does anyone have any issue like this?