Postgres ebmail and hermes

Hello!!
I have perfectly installed ebmail and Hermes 2 whith JDK
1.4.2 ,postgreSQL
8.1 and Tomacat 5.0.28 and all good works.
I send messages whith ebmail and it`s writing in Postgresql but I
have
some mistakes:

2007-02-02 16:41:03 [Thread-6 ] <INFO > <cecid.ebms.spa> <Found 1
message(s) in mail box>
2007-02-02 16:41:13 [Thread-39 ] <INFO > <cecid.ebms.spa> <Received
an ebxml message from mail box>
2007-02-02 16:41:13 [Thread-39 ] <ERROR> <cecid.ebms.spa>
<Unauthorized message, no principal id>
2007-02-02 16:41:14 [Thread-39 ] <INFO > <cecid.ebms.spa> <Store
outgoing message: 20070202-164113-85(dot)(dot)(dot)(at)192(dot)168(dot)2(dot)105>
2007-02-02 16:41:25 [Thread-6 ] <ERROR> <cecid.ebms.spa> <Error in
collecting message from mail box>
hk.hku.cecid.piazza.commons.net.ConnectionException: Unable to
connect
to incoming mail server
by javax.mail.AuthenticationFailedException: [LOGIN-DELAY]
minimum
time between mail checks violation
at
hk.hku.cecid.piazza.commons.net.MailReceiver.connect(MailReceiver.java:
66)
at
hk.hku.cecid.ebms.spa.task.MailCollector.getTaskList(MailCollector.java:
49)
at
hk.hku.cecid.piazza.commons.module.ActiveTaskModule.execute(ActiveTaskModul­
e.java:
137)
at
hk.hku.cecid.piazza.commons.module.ActiveModule.run(ActiveModule.java:
205)
at java.lang.Thread.run(Thread.java:534)
Caused by: javax.mail.AuthenticationFailedException: [LOGIN-DELAY]
minimum time between mail checks violation
at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:
118)
at javax.mail.Service.connect(Service.java:255)
at javax.mail.Service.connect(Service.java:134)
at javax.mail.Service.connect(Service.java:86)
at
hk.hku.cecid.piazza.commons.net.MailReceiver.connect(MailReceiver.java:
63)
... 4 more

Can someome help me? is very important for me, Thank very much