Re: [Exim] failed to find host name from IP address

Autor: Suresh Ramasubramanian
Datum:
To: Hochstrasser Benedikt
CC: exim-users
Betreff: Re: [Exim] failed to find host name from IP address

Hochstrasser Benedikt wrote:
> Today I see in my logs an increased number of rejections because of
> "failed to find host name from IP address". While this is perfectly fine
> when dealing with spammers I have the uneasy feeling that exim sends a
> reject upon every kind of DNS failure. (some of the DNSes I tried
> managed to resolve the IP in question while others didn't).
>
> Or can someone confirm that eg. upon DNS time-outs exim sends a 451 (?)
> temporary error message instead of a 550?

exim wont do this unless you configure it to

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