我们想测试并希望切换到开放式交易所（来自 MS Exchange）。我们将购买支持服务，但目前我们正处于测试阶段，所以我需要您的帮助。
以下错误不断弹出，无人能登录：
file: /var/log/open-xchange/open-xchange.log.0
com.openexchange.exception.OXException: SRV-0001 Categories=TRY_AGAIN Message=
'The required service com.openexchange.authentication.AuthenticationService is temporary not available.
Please try again later.' exceptionID=1870517054-3
以下是来自 /opt/open-xchange/etc/ldapauth.properties 的内容
java.naming.provider.url=ldap://contoso.com:389/dc=contoso,dc=com
java.naming.security.authentication=simple
uidAttribute=cn # alternative uidAttribute=sAMAccountName has also been tried
baseDN=ou=users,dc=contoso,dc=com
adsBind=true # false has also been tried
bindOnly=true # false has also been tried
ldapScope=base # subtree has also been tried
# searchFilter # is this needed?
bindDN=readOnlyAdmin,ou=admins,dc=contoso,dc=com
bindDNPassword=secret
身份验证 ldap 包处于活动状态：
root@openexchange /o/open-xchange# sbin/listbundles |grep ldap
bundlename: com.openexchange.authentication.ldap status: ACTIVE
如果我在网上搜索它，我会找到一两个结果，它们有同样的问题，但是有它们的解决方案（例如https://forum.open-xchange.com/archive/index.php/t-7634.html) 对我来说不起作用。
我希望有人能给我指明正确的方向。
系统：
- CentOS 7
- SELinux = 已禁用
- OpenExchange 安装自http://software.open-xchange.com/products/appsuite/stable/backend/RHEL7/
- Active Directory 基于 Windows 2008 R2。