Re: [Exim] Exim vs sendmail vs PostFix vs Qmail

Nigel Metheringham writes:
>
> mbeattie@??? said:
> > Based on a Linux/390 system I've been testing for the last 6 weeks or
> > so, back-of-the-envelope calculations lead me to believe you can
> > probably support between 300000 and 3 million users on a single z900
> > system.
>
> Not your common or garden server....
>
> My feeling is that the MTA is a relatively small (even insignificant)
> part of the overall burden of doing large mail systems. Other
> significant issues (off the top of my head) are:-
> - back end mail storage
> - back end retrieval
> - spool (and back end) disk access (filesystem, raid etc)
> - user dbs etc
> - dns

My figures included all the above. One server box connected to one
disk box.

--Malcolm

--
Malcolm Beattie <mbeattie@???>
Unix Systems Programmer
Oxford University Computing Services