# HG changeset patch
# User Igor Sysoev <igor@sysoev.ru>
# Date 1204793305 0
# Node ID a47516c7065bad931869704a1921bc336e600efa
# Parent  1b2e83c4886da21baf6d02b0dd3cc8456363ef25
check duplicate resolver

diff --git a/src/mail/ngx_mail_core_module.c b/src/mail/ngx_mail_core_module.c
--- a/src/mail/ngx_mail_core_module.c
+++ b/src/mail/ngx_mail_core_module.c
@@ -422,6 +422,10 @@ ngx_mail_core_resolver(ngx_conf_t *cf, n
 
     value = cf->args->elts;
 
+    if (cscf->resolver != NGX_CONF_UNSET_PTR) {
+        return "is duplicate";
+    }
+
     if (ngx_strcmp(value[1].data, "off") == 0) {
         cscf->resolver = NULL;
         return NGX_CONF_OK;