[Mimedefang] "Command unrecognized" when doing tempfail

Yizhar Hurwitz yizhar at mail.com
Mon Jun 4 16:59:30 EDT 2007


> From: "Oliver Schulze L." <oliver at samera.com.py>
> Hi Dave,
> after doing some packet analisis in wireshark and could determine that
> indeed I'm talking to a Cisco router.
> So my connection is:
> my smtp server -> ISP cisco -> remote smtp server
> I'm now trying to contact again the ISP admin regarding this issue.
This could also be a Cisco IOS router with the IOS Firewall enabled and 
the command:
ip inspect smtp
or something like that.

This is similar to "fixup protocol smtp" on a Cisco pix, but less common,
because normally/traditionally most routers are not configured to do 
layer 7 content filtering.

Yizhar Hurwitz

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