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
index 1689776047279573020fb582f41017e91f440901..a3aa5d50d0ca8647907cca34e3f451b8452b02a1 100644 (file)
--- 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_session_t *s, ngx_uint_t state)
 
     b->last += n;
 
-    if (b->last - b->pos < 5) {
+    if (b->last - b->pos < 4) {
         return NGX_AGAIN;
     }