On 7/6/2016 6:55 PM, Homer Wilson Smith wrote:
> On Fri, 3 Jun 2016, Noel Jones wrote:
>> For the other possible combinations of bad DNS setup, you'll need to
>> use a policy service.
>
> OK, can you point me to RTFM for this?
>
Documentation:
http://www.postfix.org/SMTPD_POLICY_README.ht
On Fri, 3 Jun 2016, Noel Jones wrote:
On 6/3/2016 6:39 PM, Homer Wilson Smith wrote:
The following main.cf, thanks to Noel, blocks mail whose
DNS is misconfigured as follows.
1.) IP -> nothing
2.) IP -> domain -> nothing
3.) IP -> domain -> IP2
It accepts only mail
On 6/3/2016 6:39 PM, Homer Wilson Smith wrote:
>
> The following main.cf, thanks to Noel, blocks mail whose
> DNS is misconfigured as follows.
>
> 1.) IP -> nothing
>
> 2.) IP -> domain -> nothing
>
> 3.) IP -> domain -> IP2
>
> It accepts only mail where
>
> 4.)
The following main.cf, thanks to Noel, blocks mail whose
DNS is misconfigured as follows.
1.) IP -> nothing
2.) IP -> domain -> nothing
3.) IP -> domain -> IP2
It accepts only mail where
4.) IP -> domain -> IP
I find that 1 and 2 block most of the spam, an
