[exim] Re: Tackling Bot Blasts

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Author: Slavko
Date:  
To: exim-users
Subject: [exim] Re: Tackling Bot Blasts
Dňa 29. mája 2023 9:01:56 UTC používateľ Pete Long via Exim-users <exim-users@???> napísal:

>drop
> message = No host name found.
> condition = ${if eq{$host_lookup_failed} {1} {1}{0}}


Beware, host lookup is done by forward confirmation,
in other words, PTR followed by A/AAAA lookup. That
variable has 1 if any from them fails, not only the PTR
one... IMO too strict for real world...

Anyway, that must be enough:

    condition = $host_lookup_failed

regards


-- 
Slavko
https://www.slavino.sk/


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