nginx 0.3.13 *) Feature: the IMAP/POP3 proxy supports STARTTLS and STLS. *) Bugfix: the IMAP/POP3 proxy did not work with the select, poll, and /dev/poll methods. *) Bugfix: in SSI handling. *) Bugfix: now Solaris sendfilev() is not used to transfer the client request body to FastCGI-server via the unix domain socket. *) Bugfix: the "auth_basic" directive did not disable the authorization; bug appeared in 0.3.11.

--- a/src/imap/ngx_imap_ssl_module.h
+++ b/src/imap/ngx_imap_ssl_module.h
@@ -13,12 +13,18 @@
 #include <ngx_imap.h>
 
 
+#define NGX_IMAP_STARTTLS_OFF   0
+#define NGX_IMAP_STARTTLS_ON    1
+#define NGX_IMAP_STARTTLS_ONLY  2
+
+
 typedef struct {
     ngx_flag_t      enable;
 
     ngx_ssl_t       ssl;
 
     ngx_flag_t      prefer_server_ciphers;
+    ngx_flag_t      starttls;
 
     ngx_uint_t      protocols;