ForgottenPasswordPortlet Problem

Hi,

I have installed several instances of Jetspeed 2.2.1 without any 
problem. So, I am very familiar with it.
Now, we are facing with ForgottenPasswordProblem.
When the user clicks on Request New Password button, after delay of 
10-15 seconds, he receives following message:
[Failed to send password:java.lang.ArrayIndexOutOfBoundsException]

We think, that problem is not related to network, firewall, SMTP and 
similar. On that Jetspeed instance we have portlet application that 
sends emails without any problems.

Any help is appreciated.

Environment:
OS: Red Hat Enterprise Linux Server release 5.4 (Tikanga)

java version "1.6.0_20"
Java(TM) SE Runtime Environment (build 1.6.0_20-b02)
Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed mode)

override.properties
#-------------------------------------------------------------------------
# E M A I L
#-------------------------------------------------------------------------
# email of the system administrator
email.admin = [email protected]
# email of the system manager
email.manager = [email protected]
# email user info attribute (non standard)
email.userinfo.attribute = user.email
# smtp email server address
email.smtp.server.address=95.140.120.85
# smtp email server user name
email.smtp.user.name=
# smtp email server user password
email.smtp.user.password=
#mail.smtp.auth
email.smtp.auth=false