hostsignature
firstto->q_signature = hostsignature(firstto->q_mailer,
to->q_signature = hostsignature(to->q_mailer,
curhost = hostsignature(m, pv[1]);
xx->q_signature = hostsignature(xx->q_mailer, xx->q_host);
yy->q_signature = hostsignature(yy->q_mailer, yy->q_host);
extern char *hostsignature __P((MAILER *, char *));