On Fri, May 7, 2021 at 8:23 AM Steven Champeon via mailop <mailop@mailop.org>
wrote:

> I've only ever seen 11 hosts that were
> actually running it.
>

I use it as an 'internal relay' and it works well.
Hundreds of copiers, UPS units, and other low-level network devices use it
as their outbound SMTP server.  It does some light re-formatting of
addresses and makes things look less spammy and then pass it on to the
company's mail server (usually GSuite) for delivery.

I've also used it in one really odd situation where a company didn't want
to buy a bunch of Exchange 2007 licenses for all their staff, so C-level
staff were on the Exchange server, and everyone else was on a Dovecot
server.

Haraka would do the spam filtering, then check the address against a list
and either route it via SMTP to Exchange 2007 or LMTP to Dovecot.  Having
Haraka in front of Exchange 2007 made debugging mail issues infinitely
easier as Exchange logs were (probably still are) absolute garbage, and the
spam filtering was dismal.

-A
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