I would suggest using an config that restricts authenticated users to
a specific IP range. Then no bots from china can successfully guess a
account.
Something like:
accept
authenticated = *
hosts = +relay_from_hosts
Then add:
hostlist relay_from_hosts = Your_local_network_or_ISP_range/CIDR
auth_advertise_hosts = Your_local_network_or_ISP_range/CIDR
A simple idea if you have a lot of users "outside" your Corporation,
use GeoIP instead to restrict relay_from_hosts and
auth_advertise_hosts to the same country as the server is located in.
That will prevent accounts from being hacked and used in spamming, as
the sender must BOTH be inside correct network AND have
username/password to be allowed.
2017-12-18 11:52 GMT+01:00 Lena--- via Exim-users <exim-users@???>:
>> From: "Ronaldo Luiz de Carvalho"
>
>> how to limit the number of emails sent by each user?
>>
>> I use WHM and I can limit by a domain account, but into a domain I want to
>> set limit to a specific account.
>
> Usually such limits are in order to catch spammers.
> But the limits are either low and inconvenient for honest users
> or high and allow spam to trickle through.
> There is another approach to rate limiting in order to catch spammers:
> https://github.com/Exim/exim/wiki/BlockCracking
>
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