Michael wrote, in part..
> Are there any attachments that listserv will let through... even if
> attachments are disabled?

Yes.  LISTSERV filters only MIME attachments.

From the LISTSERV owner's guide:

    Note also that attachments sent by Microsoft Outlook cannot be
    blocked by LISTSERV as they do not follow MIME standards (at least
    not up to and including Outlook 97; this writer has not installed
    Outlook 2000). Outlook sends attachments as imbedded uuencoded files
    and does not use the MIME Content-Type: header.

cheers, wayne

Wayne T. Smith                       mailto:[log in to unmask]
Systems Group - UNET                 University of Maine System