On Thu, 2010-07-08 at 12:01 +0100, Phil (Medway Hosting) wrote:
> ----- Original Message -----
> From: "Emmanuel Noobadmin" <centos.admin@???>
> To: "exim-users" <exim-users@???>
> Sent: Thursday, July 08, 2010 6:16 AM
> Subject: [exim] Problem with Barracuda Networks
>
>
> > I have a problem with Barracuda Networks blocking various dynamically
> > assigned IP addresses that my clients have the misfortune to be
> > assigned to every few weeks or so.
>
> I seem to remember something on Spam-l recently regarding "deep header
> inspection" of header IP's and Barracudas.
>
> I believe (so someone may like to correct me on this) that Barracudas have
> the ability to deep scan the IP addresses in ALL received headers and check
> against various blacklists. This is obviously a stupid practice unless VERY
> carefully controlled.
>
> The point is though, that it is optional to use this function (and I believe
> the default is "OFF"), so it would NOT be Barracuda that you would need to
> contact - It would be the Sys-Admins of the recipient's servers to tell them
> they are being dumb !!
>
> All the best
>
> Phil
> (Now waiting for someone to tell me I'm wrong).
>
>
Darn - forgot about that. Are people still mis-setting that? The only
time that should ever be on is if the Barracuda is in front of a device
that puts it's only header in the first 'received from' line. (Some
ALG's/Gateways/Hosts)
Turn it off otherwise.... >>>>
DEEP HEADER SCAN V4x
Menu: Block/Accept > IP REPUTATION > (third item down) DEEP HEADER SCAN
http://bayimg.com/kanPjaACI
DEEP HEADER SCAN V3x
Menu: Block/Accept > IP REPUTATION > (third item down) DEEP HEADER SCAN
http://bayimg.com/kANPmAAcI
