[courier-users] Header Re-Writing

[shyam s]

Dear Group.

As per your prevoius help(by Sam) I had setup the virtual folders and acl. The things are working fine.

Now my new problem is,is it possible to re-write the header of mail by any of the courier filters or perprocessors. My problem is that. I had a publich sharable folder to all my users, Before a mail entering into that public  folder could I re-write the From: and To: field with same id (means both the From field and To field must re-write to To address only...)  so that the users must be hidden from the information, which user had send it to that public folder.
Also in replying by a user also must able to re-write the From: id to the To: Field, so that sender and recepiant information must be hidden in the group.

I had gone through some couire-docs,but I cant find a proper one. Please do help me.

Thanks and Regards
$hyam