relayhost
m_add_string(p, lk.relayhost);
mta_relay(struct envelope *e, struct relayhost *relayh)
struct relayhost relayh;
static struct mta_relay *mta_relay(struct envelope *, struct relayhost *);
char relayhost[LINE_MAX];
int text_to_relayhost(struct relayhost *, const char *);
if (strlcpy(lk->relayhost, line, sizeof(lk->relayhost))
>= sizeof(lk->relayhost))
text_to_relayhost(struct relayhost *relay, const char *s)