On Feb 5, 2018, at 05:26, Allen Coates wrote:
Is this a reliable bad-host detector?
On 05.02.18 12:20, LuKreme wrote:
It is a very good indicator of spam. It is also an indicator of a
misconfigured mail server (in the case of spammers, intentionally so).
I would say "ignored" rather than "
On Feb 5, 2018, at 05:26, Allen Coates wrote:
>
> Is this a reliable bad-host detector?
It is a very good indicator of spam. It is also an indicator of a misconfigured
mail server (in the case of spammers, intentionally so). Anyone kitting this
error on your postfix is going to be unable to se
On 2018-02-05 12:26, Allen Coates wrote:
> On 05/02/18 00:12, Viktor Dukhovni wrote:
>>
>>
>>> On Feb 4, 2018, at 5:46 PM, J Doe wrote:
>>>
>>> Feb 4 15:05:46 server postfix/smptd[718]: warning: hostname
>>> 1-2-3-4.dyn.isp.net does not resolve to address 1.2.3.4: Name or service
>>> not known
>
On 05/02/18 00:12, Viktor Dukhovni wrote:
>
>
>> On Feb 4, 2018, at 5:46 PM, J Doe wrote:
>>
>> Feb 4 15:05:46 server postfix/smptd[718]: warning: hostname
>> 1-2-3-4.dyn.isp.net does not resolve to address 1.2.3.4: Name or service not
>> known
>>
>> Does this mean that:
>>
>> 1. smtpd recei
> On Feb 4, 2018, at 5:46 PM, J Doe wrote:
>
> Feb 4 15:05:46 server postfix/smptd[718]: warning: hostname
> 1-2-3-4.dyn.isp.net does not resolve to address 1.2.3.4: Name or service not
> known
>
> Does this mean that:
>
> 1. smtpd receives a connection from an smtp client and does a revers
Hello,
I had a question about Postfix’s smtpd DNS resolution.
In my logs (generally from spam sources), I see the following:
Feb 4 15:05:46 server postfix/smptd[718]: warning: hostname 1-2-3-4.dyn.isp.net
does not resolve to address 1.2.3.4: Name or service not known
Does this mean that:
1. s
