True64 UNIX connection error

On True64 UNIX v5.1B, Patch version: T64V51BB1AS0001-20021229 OSF540.
the system log file in mai.log reported the following messages:
reject connections on daemon Daemon0: load average:19
reject connections on daemon Daemon0: load average:24
after a period of time, reported the following message:
accepting connections again for daemon Daemon0

Once the reject connection message reported, the packets of the application on this node can not send and receive normally, anyone can help me, thanks
by the way, the application on this node use the tcp to exchange the data with others.