Yea, I understand why it is called Blind Carbon Copy, but how would sendmail handle this? There is absolutly nothing in the headers that would allow me to trace where it should go. How should I forward this mail? I would hate to dump 20,000+ aliases in the sendmail alias file. That just seems like it would bloat sendmail and make it drag its knees. Plus we would have to re-write the email forwarding system to work with the sendmail aliases file, and we are trying to avoid that. Any suggestions for a semi-easy fix?