wes24 0 Newbie Poster

I recently dowloaded a script for Entourage to include html in messages. Everything worked fine, however when I sent the message it seems it left the SMTP server and has been continuously arriving daily ever since. Needless to say, recipients are getting annoyed. My IT professional says the message will stop eventually, however it's been almost a month now. Is there any further action I can take, as I fear our domain will be black listed. Thanks in advance.