Re: disabling SMTP

[3/28/2004 7:29 PM] Rob Nelson :

Could you elaborate on this? I use PIX firewalls all over the place and don't seem to have a problem with SMTP or ESMTP.

Check whether "smtp fixup" is enabled - and if it is, disable it using # no fixup protocol smtp 25 Test the results (from an outside host, using netcat / telnet to port 25) to see for yourself. Briefly, a pix doing "smtp fixup" - * Munges the smtp banner entirely with ***** (that breaks an rfc or two) * Disables ESMTP (so EHLO will not be accepted) * Munges several replies returned by the mailserver, turning them to XXX srs -- srs (postmaster|suresh)@outblaze.com // gpg : EDEDEFB9 manager, outblaze.com security and antispam operations