On Sun, Feb 15, 2015 at 09:29:50AM -0700, Sherman Boyd wrote:
> Hello. I'm working on a little ARM server that runs Postfix. On incoming
> or outgoing email I want to trigger an animation on an attached ring of
> LEDs. My first attempt was to follow the approach here (content filter
> re-injecting with sendmail) :
* Define "incoming" mail.
* Define "outgoing" mail.
Mail enters Postfix from multiple sources:
* From outside via SMTP.
* From local processes via sendmail(1).
* Internally generated bounce and postmaster notices
* Internally generated probes via verify(8)
* Indirect delivery of aliases in local(8)
Mail leaves Postfix via:
* Delivery to remote machines via SMTP.
* Delivery to a mailstore via LMTP
* Delivery to a local mbox file or maildir via local(8) or virtual(8).
* Delivery to commands via command aliases(5), mailbox_command settings
or pipe(8) transports.
* Circular file via discard(8).
Which of these various events do you want to blink the lights?
Presumably this is intended to be a low-volume deployment, otherwise
the lights will just flicker imperceptibly.
--
Viktor.
