To answer my own question, the one I got back from the list has the same message id that was sent out so a t least in this particular delivery chain nothing mangled it.
In that case keeping a list of the N last delivered message ids and discarding ones already on the list shouldn't be too difficult indeed. The only problem then is list mail will seldom land in the list sub-folders as the direct replies should almost always come first and land in inbox. -- Dimitri Maziuk Programmer/sysadmin BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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