I believe that spamdyke does this, and a lot more, including graylisting.
Are you using spamdyke yet? If so, what's your configuration?
P.V.Anthony wrote:
Hi,
There is just too much spam. Especially the ones that forge email
addresses.
I am thinking of setting up a reverse dns checking.
An alternative to spamdyke is by setting the following in the run file.
-p: Paranoid. After looking up the remote host name in DNS, look up the
IP addresses in DNS for that host name, and remove the environment
variable $TCPREMOTEHOST if none of the addresses match the client's IP
address.
and the following in the tcprules file.
=:allow
:allow,RBLSMTPD="-bad reverse dns"
Currently are there anyone on this list that have sent the servers to
check reverse dns? If so, any problems?
Please share your thoughts on this.
P.V.Anthony
--
-Eric 'shubes'
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