Archive problems

[MICHAEL KERR <MKERR @ vichosp . london . on . ca>]

Can anybody explain this one?

550 "/usr/local/etc/mail/wrapper archive2.pl -a -m -f 
/usr/local/etc/mail/archive/londonweb.archive"... Can't create output
Receiving 9

My @archive_dirs = {"/usr/local/etc/mail/archive"}