[nzlug] (OT) Sorbs etc, was Exim: Limiting outgoing connections on Debian

[Robin Sheat]

On Tuesday 10 October 2006 23:30, Simon Lyall wrote:
> a. Delayed
> b. Being returned to the sender with an error
> c. Being lost with no error being generated to sender or receiver.
Aside from the first one, any remotely compliant sender shouldn't suffer from 
these. And if it does, then it was likely dropping messages randomly anyway, 
if the remote host happened to be a little flakey.

> b. Greylisting imposes load on the mail servers of senders.
Not much of one, provided the greylisting is implemented correctly, and it's 
only a one off generally.

> c. Greylisting is fairly simple for Spammers to beat and they will beat it
>    when it becomes worthwhile.
It's not trivial for spammers to beat. Think of sending 100,000 emails from a 
bot. You're not going to queue them up for retries any time soon. 

-- 
Robin <robin at kallisti.net.nz> JabberID: <eythian at jabber.kallisti.net.nz>

Hostes alienigeni me abduxerunt. Qui annus est?

PGP Key 0xA99CEB6D = 5957 6D23 8B16 EFAB FEF8  7175 14D3 6485 A99C EB6D
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