--- a/src/imap/ngx_imap_handler.c
+++ b/src/imap/ngx_imap_handler.c
@@ -2,18 +2,56 @@
 #include <ngx_config.h>
 #include <ngx_core.h>
 #include <ngx_event.h>
+#include <ngx_imap.h>
+#include <nginx.h>
+
+
+static void ngx_imap_auth_state(ngx_event_t *rev);
+
+
+static char pop3_greeting[] = "+OK " NGINX_VER " ready" CRLF;
+static char imap_greeting[] = "* OK " NGINX_VER " ready" CRLF;
 
 
 void ngx_imap_init_connection(ngx_connection_t *c)
 {
+    ngx_int_t  rc;
+
     ngx_log_debug0(NGX_LOG_DEBUG_IMAP, c->log, 0,
                    "imap init connection");
 
-    if (ngx_close_socket(c->fd) == -1) {
+    c->log_error = NGX_ERROR_INFO;
+
+    rc = ngx_send(c, pop3_greeting, sizeof(pop3_greeting) - 1);
 
-        /* we use ngx_cycle->log because c->log was in c->pool */
+    if (rc == NGX_ERROR) {
+        ngx_imap_close_connection(c);
+        return;
+    }
 
-        ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, ngx_socket_errno,
-                      ngx_close_socket_n " failed");
+    c->read->event_handler = ngx_imap_auth_state;
+
+    if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
+        ngx_imap_close_connection(c);
+        return;
     }
 }
+
+
+static void ngx_imap_auth_state(ngx_event_t *rev)
+{
+    ngx_connection_t  *c;
+
+    c = rev->data;
+
+    ngx_imap_close_connection(c);
+}
+
+
+void ngx_imap_close_connection(ngx_connection_t *c)
+{
+    ngx_log_debug1(NGX_LOG_DEBUG_IMAP, c->log, 0,
+                   "close imap connection: %d", c->fd);
+
+    ngx_close_connection(c);
+}