shared folder for spam

[Gary C. New]

Could someone direct me to an example on creating a globally based 
shared folder?  I want to setup a single shared folder on my mail 
servers that will allow different virtual domain users to report spam.

Would a shared folder or bulletin board be best suited for this function?

Does anyone know how to configure horde's imp for shared cyrus folders?

Thank you for your assistance.

Respectfully,

Gary