int port; /* port value in host order (if SRV lookup) */
int mx; /* MX value if found via MX records */
int sort_key; /* MX*1000 plus random "fraction" */
int status; /* Usable, unusable, or unknown */
int why; /* Why host is unusable */
int last_try; /* Time of last try if known */
int port; /* port value in host order (if SRV lookup) */
int mx; /* MX value if found via MX records */
int sort_key; /* MX*1000 plus random "fraction" */
int status; /* Usable, unusable, or unknown */
int why; /* Why host is unusable */
int last_try; /* Time of last try if known */