duplicate messages

[Christopher Adams <chris @ sparkie . osl . state . or . us>]

I'm not sure if this is strictly a Majordom question, but I just want to 
see if other administrators have experienced this problem.

Can anyone explain why one list would send duplicate messages (sometimes 
3) to certain addresses? This does not happen with other lists, only this 
one. This leads me to believe that it has something to do with a 
particular remote mail server. What do y'all think?

Christopher Adams
Automated Systems
Oregon State Library
chris@sparkie.osl.state.or.us