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-rw-r--r--source3/libads/dns.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/source3/libads/dns.c b/source3/libads/dns.c
index b67d802bdc..bd280fea62 100644
--- a/source3/libads/dns.c
+++ b/source3/libads/dns.c
@@ -291,6 +291,12 @@ static NTSTATUS dns_send_req( TALLOC_CTX *ctx, const char *name, int q_type,
if ( (resp_len = res_query(name, C_IN, q_type, buffer, buf_len)) < 0 ) {
DEBUG(3,("ads_dns_lookup_srv: Failed to resolve %s (%s)\n", name, strerror(errno)));
TALLOC_FREE( buffer );
+ if (errno == ETIMEDOUT) {
+ return NT_STATUS_IO_TIMEOUT;
+ }
+ if (errno == ECONNREFUSED) {
+ return NT_STATUS_CONNECTION_REFUSED;
+ }
return NT_STATUS_UNSUCCESSFUL;
}
} while ( buf_len < resp_len && resp_len < MAX_DNS_PACKET_SIZE );
@@ -686,6 +692,12 @@ NTSTATUS ads_dns_query_dcs(TALLOC_CTX *ctx,
status = ads_dns_query_internal(ctx, "_ldap", realm, sitename,
dclist, numdcs);
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT) ||
+ NT_STATUS_EQUAL(status, NT_STATUS_CONNECTION_REFUSED)) {
+ return status;
+ }
+
if (sitename && !NT_STATUS_IS_OK(status)) {
/* Sitename DNS query may have failed. Try without. */
status = ads_dns_query_internal(ctx, "_ldap", realm, NULL,
@@ -710,6 +722,12 @@ NTSTATUS ads_dns_query_kdcs(TALLOC_CTX *ctx,
status = ads_dns_query_internal(ctx, "_kerberos", realm, sitename,
dclist, numdcs);
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT) ||
+ NT_STATUS_EQUAL(status, NT_STATUS_CONNECTION_REFUSED)) {
+ return status;
+ }
+
if (sitename && !NT_STATUS_IS_OK(status)) {
/* Sitename DNS query may have failed. Try without. */
status = ads_dns_query_internal(ctx, "_kerberos", realm, NULL,