From 70966c154fa867a0465e18cf64d46b6a1a61a597 Mon Sep 17 00:00:00 2001
From: Igor Sysoev <igor@sysoev.ru>
Date: Mon, 9 Nov 2009 18:04:05 +0000
Subject: fix "PTR ." case in address resolver

---
 src/mail/ngx_mail_smtp_handler.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'src/mail')

diff --git a/src/mail/ngx_mail_smtp_handler.c b/src/mail/ngx_mail_smtp_handler.c
index 5d9be1484..12e4b5711 100644
--- a/src/mail/ngx_mail_smtp_handler.c
+++ b/src/mail/ngx_mail_smtp_handler.c
@@ -124,6 +124,19 @@ ngx_mail_smtp_resolve_addr_handler(ngx_resolver_ctx_t *ctx)
         return;
     }
 
+    if (ctx->name.len == 0) {
+        ngx_log_error(NGX_LOG_ERR, c->log, 0,
+                      "%V has been resolved to zero name", &c->addr_text);
+
+        s->host = smtp_unavailable;
+
+        ngx_resolve_addr_done(ctx);
+
+        ngx_mail_smtp_greeting(s, s->connection);
+
+        return;
+    }
+
     c->log->action = "in resolving client hostname";
 
     s->host.data = ngx_pstrdup(c->pool, &ctx->name);
-- 
cgit