Re: [anti-spam-wg] Semi-OT: XXXX SMTP command

  • From: Emanuele Balla balla@localhost
  • Date: Thu, 12 Jan 2006 19:03:55 +0100

Markus Stumpf wrote:

> From the structure of the command I'd guess it is some filter/firewall
> that maybe sees an EHLO, considers this a bad command and masks it with
> "XXXX".
> 
> Anybody else seeing this or knows what fine piece of ^H^H^H^H^Hsoftware
> is doing this?

Almost surely a Cisco PIX with "fixup protocol smtp" active.