Blocking MX query

Suresh Ramasubramanian ops.lists at
Tue Sep 4 10:27:28 UTC 2012

Sure you will get it - but there's also spam through various webmail
services, spam through the outbounds of different ISPs etc that you
won't prevent with your approach.

On Tue, Sep 4, 2012 at 3:54 PM, Ibrahim <ibrahim1 at> wrote:
> We create special NAT that all destination use TCP port 25 will be NATed to
> one public IP address only. And this public IP address is registered on most
> of RBLs. But we are still receiving complaint about spammer from this public
> IP address :-)

Suresh Ramasubramanian (ops.lists at

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