[BBLISA] State of greylisting these days

[Steven M Jones]

On 07/24/2014 08:05 AM, John Miller wrote:
>
> Is anyone still using greylisting for their mail servers these days? 
> We're currently using milter-greylist with sendmail, and seems like
> we're seeing more and more clients that don't handle it well--I'm
> spending a couple of hours each week searching through mail logs,
> whitelisting MXs, and letting everyone know what's happening.  Getting
> kind of old; would like everyone's take on it.

I've used milter-greylist for years on what amounts to a few personal
domains, plus a dozen or so domains I'm MX for from that server. Made a
big difference on introduction, but haven't turned it off to confirm
current effectiveness. Usually it's nothing worse than an inconvenience
for things like confirming account creation with various vendors and web
forums. I very rarely have to add any new exceptions.

Greylisting isn't something I recommend commercially because there are
too many idiots in the world who think email is a combination of instant
messaging and a file transfer protocol. A certain species of financial
type likes to claim that "Millions Of Dollars!" are lost whenever their
email messages take anything over 5 seconds, end-to-end. Sigh...

--Steve.