Re: [exim] Performance considerations

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Autor: Suresh Ramasubramanian
Data:  
Para: exim-users
CC: Peter Savitch
Assunto: Re: [exim] Performance considerations
Philip Hazel wrote:

> As far as scalability goes, there are ISPs handling millions of messages
> a day with millions of customers, and they do it with Exim. What they
> usually do is implement a multi-level system so that queues on the
> front-line delivery hosts are always short. Fallback hosts are used to
> hold the queues. Multiple levels can be used, e.g. one try on a main
> delivery host, try for 6 hours on the first level fallback, then shunt
> over to another level where the performance may be bad but it doesn't
> matter at that stage.


Yup. The powerpoint that I pointed to in my previous email describes
just such a system.

Using split_spool_directory is also quite useful.