Re: [exim] Daily limit per domain/user

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Author: Jeremy Harris
Date:  
To: exim-users
Subject: Re: [exim] Daily limit per domain/user
On 10/01/14 13:27, xMANIGHTx wrote:
> I saw that exim has a ratelimit functionality for outgoing mails:
> <http://www.exim.org/exim-html-current/doc/html/spec_html/ch-access_control_
> lists.html#SECTratelimiting>
> http://www.exim.org/exim-html-current/doc/html/spec_html/ch-access_control_l
> ists.html#SECTratelimiting


It's simpler to use it to limit (or alert on) the rate of acceptance
of mails, but since every mail must be accepted before it is sent
outbound this amounts to the same thing.

> I was wondering if and how to set a domain wide limit for example that will
> block (and eventually send an alert to admins) emails if the daily (or
> hourly or whatever interval) number exceed the set limit and then be able to
> configure a different limit on a email account basis. I'm talking about
> authenticated senders of course.


Read the manual chapters on ACLs. You probably want to place this
in the MAIL ACL, but possibly elsewhere depending on your existing
config. Read also the list of expansion variables.

> For example: limit all email accounts sending from @mydomain.com to 100
> emails/day (per each email account on this domain) and then set special
> rules for user1@??? and user2@??? so that each of them can
> send 500 emails/day instead.


The ratelimit can depend on just about anything; a string depending on
the account but looked up in a database, to give different per-account
values, is perfectly feasible.

Likewise, so is a per-domain ratelimit.
-- 
Cheers,
    Jeremy