The daemon only handles incoming mail, or in other words waits for incoming
connections from other mail servers. Outgoing mail is sent on demand, or in
other words a connection is made to a mail server or relay as and when
required.
Cheers,
Cliff
On Mon, Sep 29, 2014 at 8:01 AM, Always Learning <centos@xxxxxxxxxxx> wrote:
> Had a surprising event on C 6.5.
>
> Exim was the only MTA installed. It was partially configured (with ACL,
> Router, Transport) and definitely not running.
>
> I was remotely testing a web page. A web page error condition invoked
> the embedded PHP mail() command.
>
> To my astonishment something in Centos woke-up Exim. Exim sent the email
> and then became inactive again. The Exim logs does not show any start-up
> lines, just
>
> 1. input from Apache.
> 2. output to remote server.
> 3. 'completed'.
>
> Hours later Logwatch, not yet customised, also caused inactive Exim to
> send an email (which got rejected by Exim because it was to local user
> 0).
>
> What causes Centos to temporarily activate in-active (meaning
> non-running) Exim ?
>
> Thanks,
>
> Paul.
> England EU.
>
>
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