[exim] tainted uux transport

2023-07-30 14:23:11 1qQ7KA-000BIX-27 ** foo@??? R=force_uucp T=uux: Tainted
arg 4 for uux transport command: '(@foo.com)'

uux:
driver = pipe
command = "/usr/local/bin/uux - -r $host!rmail ($local_part_suffix@$domain)"
path = "/usr/local/bin:/usr/bin:/bin"
return_fail_output
user = uucp

i tried $local_part_prefix and suffix.

randy, confused

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