Java EE (Java Enterprise Edition) General Discussion

Hi,
I am facing following Exception when I try to Send Email by using our Email Component built in Java using Java Mail API.May I know any clue regarding this...

SendFailedException at Tue Feb 18 10:36:34 EST 2003
sending email [1] <MS File for Journal of Clinical Microbiology (JCM)
JCM00001-02 Version 2 on FTP site> [To: joshuasunil@yahoo.com] [Cc: ] [From:
tthomasian@asmusa.org] Sending failed;
nested exception is:
javax.mail.SendFailedException: Invalid Addresses;
nested exception is:
javax.mail.SendFailedException: 550 5.7.1 <joshuasunil@yahoo.com>...
Relaying denied. IP name lookup failed [xx.xx.x.xxx]

main: javax.mail.SendFailedException: Sending failed;
nested exception is:
javax.mail.SendFailedException: Invalid Addresses;
nested exception is:
javax.mail.SendFailedException: 550 5.7.1 <joshuasunil@yahoo.com>...
Relaying denied. IP name lookup failed [10.36.2.201]

main: at javax.mail.Transport.send0(Transport.java:219)
main: at javax.mail.Transport.send(Transport.java:81)
main: at mypackage.EmailMessage.send(Unknown Source)
main: at EmailSample.sendEmails(EmailSample.java:90)
main: at EmailSample.main(EmailSample.java:41)


Thanks & Regards
Ashok Kumar