diff options
Diffstat (limited to 'usr.sbin/smtpd/dns.c')
| -rw-r--r-- | usr.sbin/smtpd/dns.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/usr.sbin/smtpd/dns.c b/usr.sbin/smtpd/dns.c index d0a933b7d9e..05af9ae1ca0 100644 --- a/usr.sbin/smtpd/dns.c +++ b/usr.sbin/smtpd/dns.c @@ -1,4 +1,4 @@ -/* $OpenBSD: dns.c,v 1.8 2009/02/15 09:58:31 jacekm Exp $ */ +/* $OpenBSD: dns.c,v 1.9 2009/02/15 13:12:19 jacekm Exp $ */ /* * Copyright (c) 2008 Gilles Chehade <gilles@openbsd.org> @@ -26,6 +26,7 @@ #include <arpa/nameser.h> #include <event.h> +#include <netdb.h> #include <resolv.h> #include <stdio.h> #include <stdlib.h> @@ -57,7 +58,7 @@ mxsort(struct mxrecord *array, size_t len) } } -size_t +int getmxbyname(char *name, char ***result) { union { @@ -80,8 +81,19 @@ getmxbyname(char *name, char ***result) ret = res_query(name, C_IN, T_MX, (u_int8_t *)&answer.bytes, sizeof answer); - if (ret == -1) - return 0; + if (ret == -1) { + switch (h_errno) { + case TRY_AGAIN: + return (EAI_AGAIN); + case NO_RECOVERY: + return (EAI_FAIL); + case HOST_NOT_FOUND: + return (EAI_NONAME); + case NO_DATA: + return (0); + } + fatal("getmxbyname: res_query"); + } /* sp stores start of dns packet, * endp stores end of dns packet, |