Autor: Wakko Warner Data: A: Matthias Lewandowski CC: 'Russell King', exim-users Assumpte: Re: [Exim] Help filtering out From:<>
> > If you block "MAIL FROM:<>" you will be preventing bounce > > messages being
> > returned to your system. Also those of us who verify the validity of
> > addresses won't be able to verify them on your system, so we
> > won't accept
> > your mail.
> >
> > IOW, never, ever block MAIL FROM:<>.
> >
> > --
> > Russell King (rmk@???)
>
> I think, he doesn't want to drop them, simply
> bypass the scanner to safe his resources...
IMO, a bad decision. Swen proves that. However, how often is a bounce that
large? Oh yea. Exim's default is 100k to bounce.
Where I work, I make no distinction between bounces and regular email to be
processed by the mail scanner. When testing, I bombarded the machine with
80 emails to see how it'd react. A pentium 233mhz pc 128mb ram (2 cpus)
performed rather well. My mail scanner is setup as a daemon listinging on
LMTP with a connection limit of 10 (exim queues the emails).
Where I work, noone expects high high speed out of the mail server (internet
is dsl). Sending to the server is quite quick. People generally expect a
few minutes for email to be delivered to the destination (local
destinations). Compared to some, the user base is small (just over 200
people). The pop3 server is hit way more times than smtp is.
--
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