Zimbra 8.5 bug ( network service error has occurred)

 Error by Login error

Just execute the following commands:

?

$ zmprov ms `zmhostname` zimbraInvalidLoginFilterMaxFailedLogin 0   $ zmprov mcf zimbraInvalidLoginFilterMaxFailedLogin 0   $ zmmailboxdctl restart      OR  Error by certificate: recreate certificate ? /opt/zimbra/bin/zmcertmgr viewdeployedcrt  recommend regenerate: ? /opt/zimbra/bin/zmcertmgr createca -new /opt/zimbra/bin/zmcertmgr createcrt -new -days 365  /opt/zimbra/bin/zmcertmgr deploycrt self /opt/zimbra/bin/zmcertmgr deployca   /opt/zimbra/bin/zmcertmgr viewdeployedcrt zmcontrol restart