change directories / can't forward mails with attachments

Hello,
I recently reinstalled Netscape 7.1 on a different hard disk
of our MacIntosh. To transfer the old mail server and directory 
structure I set up the same e-mail accout names and after that 
copyied the content of the directories of the old disk to the new disk into 
the directory users - username - library - mozilla - username. Everythink 
works fine and I cn see all the old mails and send mail. The only think 
that doesn't work is forwarding of incoming mails with attachments. The 
mail is only forwarded without the attachment and Netscape displays that 
there is an error with the mail.

Is there any special file or directory for the attachments, that I must
setup manually ?

Thanks for your help !

regards,

Lutz
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Lutz Marten, [email protected], Germany