# HG changeset patch
# User Igor Sysoev <igor@sysoev.ru>
# Date 1272016432 0
# Node ID c631ef8beaaa5bf8a304e800df69deadea1afbf5
# Parent  2132e8ea8fe4148ac087a99a468a6ad9a495a8ae
Zimbra IMAP server may return only 4 bytes: "+ \r\n"

diff --git a/src/mail/ngx_mail_proxy_module.c b/src/mail/ngx_mail_proxy_module.c
--- a/src/mail/ngx_mail_proxy_module.c
+++ b/src/mail/ngx_mail_proxy_module.c
@@ -726,7 +726,7 @@ ngx_mail_proxy_read_response(ngx_mail_se
 
     b->last += n;
 
-    if (b->last - b->pos < 5) {
+    if (b->last - b->pos < 4) {
         return NGX_AGAIN;
     }