Greetings,
In an effort to greatly reduce the percentage of spam that manages to
pass through our backup mail spools, we are implementing a greylisting
system on the smtp2.easydns.com mail pool.
This system will have a positive effect on legitimate mail flow, and
will reduce spooling of unwanted junk mail. The impact may be an
initial delay of 5 to 45 minutes for “new” mail servers that send to our
spools for the first time. Since this will be implemented on the
secondary backup MX pool, normal mail forwarding relay will not be
impacted.”
Greylisting relies on the fact that most spam sources do not
behave in the same way as “normal” mail systems. Although it
is currently very effective by itself, it will perform best
when it is used in conjunction with other forms of spam
prevention. “
For more information, please see
http://greylisting.org/articles/whitepaper.shtml
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