nginx 0.6.27 *) Change: now by default the rtsig method is not built on Linux 2.6.18+. *) Change: now a request method is not changed while redirection to a named location via an "error_page" directive. *) Feature: the "resolver" and "resolver_timeout" directives in SMTP proxy. *) Feature: the "post_action" directive supports named locations. *) Bugfix: a segmentation fault occurred in worker process, if a request was redirected from proxy, FastCGI, or memcached location to static named locations. *) Bugfix: browsers did not repeat SSL handshake if there is no valid client certificate in first handshake. Thanks to Alexander V. Inyukhin. *) Bugfix: if response code 495-497 was redirected via an "error_page" directive without code change, then nginx tried to allocate too many memory. *) Bugfix: memory leak in long-lived non buffered connections. *) Bugfix: memory leak in resolver. *) Bugfix: a segmentation fault occurred in worker process, if a request was redirected from proxy, FastCGI, or memcached location to static named locations. *) Bugfix: in the $proxy_host and $proxy_port variables caching. Thanks to Sergey Bochenkov. *) Bugfix: a "proxy_pass" directive with variables used incorrectly the same port as in another "proxy_pass" directive with the same host name and without variables. Thanks to Sergey Bochenkov. *) Bugfix: an alert "sendmsg() failed (9: Bad file descriptor)" on some 64-bit platforms while reconfiguration. *) Bugfix: a segmentation fault occurred in worker process, if empty stub block was used second time in SSI. *) Bugfix: in copying URI part contained escaped symbols into arguments.

--- a/src/mail/ngx_mail.h
+++ b/src/mail/ngx_mail.h
@@ -81,6 +81,7 @@ typedef struct {
     ngx_mail_protocol_t    *protocol;
 
     ngx_msec_t              timeout;
+    ngx_msec_t              resolver_timeout;
 
     ngx_flag_t              so_keepalive;
 
@@ -89,6 +90,8 @@ typedef struct {
     u_char                 *file_name;
     ngx_int_t               line;
 
+    ngx_resolver_t         *resolver;
+
     /* server ctx */
     ngx_mail_conf_ctx_t    *ctx;
 } ngx_mail_core_srv_conf_t;
@@ -147,6 +150,8 @@ typedef struct {
     void                  **main_conf;
     void                  **srv_conf;
 
+    ngx_resolver_ctx_t     *resolver_ctx;
+
     ngx_mail_proxy_ctx_t   *proxy;
 
     ngx_uint_t              mail_state;
@@ -171,6 +176,7 @@ typedef struct {
     ngx_str_t               text;
 
     ngx_str_t              *addr_text;
+    ngx_str_t               host;
     ngx_str_t               smtp_helo;
 
     ngx_uint_t              command;