Author: Tom Kistner Date: To: David CC: exim-users Subject: Re: [exim] Exim and auth behind Cisco kit?
David wrote:
> A typical session looks like this (captured with wireshark):
>
> 220 ************0 ****200***0******0000
> EHLO [192.168.20.175]
> 500 unrecognized command > An nmap scan from outside shows that port 25 is "Cisco PIX sanatized
> smtpd" which I find interesting. Could it be that the above is
> explained by some strange behaviour of the router or firewall? If so,
> can somebody suggest how to stop it interfering with my SMTP sessions?
1) Visit the physical location of the PIX.
2) Replace it with a standard issue CAT5 cable.
3) Problem solved.
4) (Optional) Sell PIX to some poor sod on Ebay.
(Seriously, the PIX transparently rewrites SMTP traffic, you should
switch off that feature if possible).
