初次使用LOTUS DOMINO 9.0 遇到问题

[0854:0009-0DF0] 2013-06-27 10:39:04   LDAP Server: Listener failure, TCP/IP por
t number [389] is already in use on this system
[0854:0009-0DF0] 2013-06-27 10:39:04   Suspending listen task for 20 seconds due
to network errors

打开DOMINO提示这个问题，是怎么回事？各位大神！收起