Thanks guys, looks like a bit more R&D for me. Cheers,
Brad On Fri, 23 Apr 2021, 06:49 Heiko Schlittermann via Exim-users, < [email protected]> wrote: > Hi, > > Brad King via Exim-users <[email protected]> (Mi 21 Apr 2021 23:33:20 > CEST): > > What I am trying to find out specifically is about rate limiting. I > > need the ability to apply different classes of service for different > > IP addresses. That is, they will have different rate limits and > > connection limits. > > > > I understand this is quite easy on a single server, but how do I > > configure this on a cluster? > > Unfortunately currently Exim running on one host can't share information > with an instance running on another host, out of the box. > > However: you can use a shared FS for the database files (hint files), > where Exim stores the rates, and other hits. But I assume you'll run > into locking issues quite fast. > > > For example, if IP 1.1.1.1 was assigned 2000 messages/hour. I have 10 > > EXIM servers behind my VIP.. How do I ensure that 1.1.1.1 can only > > send max 2000 messages/hour? It would be possible, on a 'per server' > > basis that they may make a connection to multiple EXIM servers within > > the hour which would give them a possible volume of 20000 > > messages/hour(2000x10 EXIM servers) > > For most cases, if your loadbalancer balances the connections quite > evenly, you can apply 1/nth of the rate per instance. That's by far not > perfect, but should do the job. > > Alternativly you can start hacking Exim and provide memcache, redis, > whatever for the hint databases. (It shouldn't be too hard.) If you > can't do the hacking on your own, try asking if there is anybody you can > pay for it. > > Best regards from Dresden/Germany > Viele Grüße aus Dresden > Heiko Schlittermann > -- > SCHLITTERMANN.de ---------------------------- internet & unix support - > Heiko Schlittermann, Dipl.-Ing. (TU) - {fon,fax}: +49.351.802998{1,3} - > gnupg encrypted messages are welcome --------------- key ID: F69376CE - > -- > ## List details at https://lists.exim.org/mailman/listinfo/exim-users > ## Exim details at http://www.exim.org/ > ## Please use the Wiki with this list - http://wiki.exim.org/ > -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
