Note: help and version output are generated by a naïve script which tries a few variants of
<command> --help, <command> -h etc. to find the command's help and version info.
Sometimes it gets lucky, sometimes it doesn't; if the output below looks wrong, it probably is.
clamsmtpd -version (return code: 0)
clamsmtpd (version 1.10)
clamsmtpd --help (return code: 2)
clamsmtpd: invalid option -- '-'
usage: clamsmtpd [-d debuglevel] [-f configfile] [-p pidfile]