Java EE (Java Enterprise Edition) General Discussion

I'm sending a text mail, and with my ISP's smtp server it works fine. With my employer's SMTP server, I get each mail that is sent twice. I'm not sure why but I know it's not a problem with the code because I've compared the code to the examples and also because it works fine with my ISP's SMTP server. If I use Outlook to send mail with my work SMTP server I get the emails only once. I saw on jGuru someone posted the same question with no response. Any ideas???

Michael