%PMDF-I-VERSION, PMDF version is PMDF V6.2
Digital Personal WorkStation running OpenVMS Alpha V7.3
PMDF_SHARE_LIBRARY version V6.2-X17; linked 13:01:07, Sep 8 2003

We had a similar size mystery which turned out to be caused by the user
having enabled attachment size limits in Eudora.

Might Netscape 7.2 have a similar option?