[Sussex] Securing Mail Servers

[Jon Fautley]

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Ronan Chilvers wrote:
> Sorry - forgot to include greylisting - very useful technique which is
> extremely effective at combatting spam.

Be careful with comments like that - yes, it's very effective at
combatting spam, as long as you take the time and effort to configure it
correctly.

I used to run Greylisting back before it was 'cool' - and it sucked.

It sucked then, and it sucks now... *unless* you want to spend the time
configuring it. In my opinion, it's much, much easier to properly
configure SpamAssassin, or any other spam detection engine, than to get
a working, reliable greylisting filter.

Oh, and when you do get it working, remember that you're quite likely to
get randomly delayed emails, and lose email coming from broken servers.

Just my 2p... :)

/j
- --
Jon Fautley RHCE, RHCX <jfautley at redhat.com>   direct: +44 1483 739615
 Technical Account Manager                     office: +44 1483 300169
 Red Hat UK                                    mobile: +44 7841 558683
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