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Posted by I am a Sock Puppet on July 26, 2005, 2:44 pm
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ArtK wrote:
> I just installed a SonicWall for our server environment. While most of
> the traffic is inbound, we do operate an email server that both sends
> and receives email. I was surprised to discover that this server
> appears to the world to be sending mail on the firewall's address.
> Inbound mail is accepted on it's native address. This is causing
> problems with reverse DNS configuration.
>
> In our current configuration we are using the IP addresses provided by
> our ISP on the servers so we didn't configure NAT. So if this server
> has a native address of say 6.5.4.3, I want outbound mail to be coming
> from that address rather than 6.5.4.1, the address of the firewall.
>
> Can anyone help me to configure the Sonicwall to accomplish this? Do I
> need a NAT rule that translates 6.5.4.3 to 6.5.4.3?
>
> Art
>
Coupla things:
What type of sonicwall is it? There was a device calle the "sonicwall
pro", but they stopped making that about 4 years ago or so, and since
you just installed it... Is it a newer series, which all have a number:
pro 2040, pro 3060, etc? or slightly older:pro 200, pro 230?
What type and rev firware?
You say mail is accepted for the server on 6.5.4.3., but is going out
via 6.5.4.1, which is the sonicwalls address.
How do you have the server connected here? You say "6.5.4.3" is the
"native address" of the server. I assume it only has one interface and
is behind the sonicwall? which means you are using a "transparent mode" DMZ?
Or are you doing something like having two interfaces in the mail
server, one for the internal and one for the external (BAD IDEA! -
people get to confoozed as to how the routing works then)
Need more info - your setup is not clear.
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