IFS File authorities and Domino

Hi guys

I'm not a Domino guru by any stretch of the imagination :), but there are
Domino servers operating on a couple of the boxes I manage, so my
involvement is mostly starting and ending servers, upgrading etc etc.

On one of the servers (so I'm told) mail is processed and the contents of
the mail - which comprises a zip file attached to a mail item - is
uncompressed and written into an IFS directory.

The reason I am writing is that the Domino people are experiencing a
problem they attribute to AS/400 security: when the files are extracted and
written to the IFS, user QNOTES does not end up with sufficient authority
to delete the file after processing, it ends up with only read and write
authority.

It seems to me that the process that puts the file there ought to also set
the authorities appropriately, but I have to confess it seems strange that
QNOTES ends up as the owner of the file but only has Read/Write access.

Can anyone shed any light on what might be the cause of this or whether
there is a step in the process the Domino developers are missing ?

Thanks in advance for any sugestions

Regards
Evan Harris