Better than just having them go away via a killfile go the header and get
the abuse addy for the remailer and write them and complain.

A number of remailers specifically state they will take no action for
usenet hostility. They likely draw the line at criminal conduct, but
you'd have to believe that they actually read their abuse box, which
itself is doubtful. About the only surefire way to get their attention
is spelled "subpoena", although a letter on attorney letterhead will
also do it.

C//