[Mimedefang] "Command unrecognized" when doing tempfail
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
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.
More information about the MIMEDefang