[YLUG] Doug Winters...
Doug Winter
doug at isotoma.com
Mon Sep 25 13:28:03 BST 2006
Robert Hulme wrote:
> According to his original email he got that bounce after 24 hours, not
> 10 minutes.
yep. But my greylisting only delays emails by 10 minutes. How long the
server then waits to retry is outside my control.
From the logs, his mailserver then waits 8 hours to retry, from a
different IP address (so gets greylisted again), and then waits another
8 hours before retrying from the original IP address, by which point the
previous attempt has been expired from the cache.
I've bumped the lifetime of the retry cache to 24 hours, which ought to
pick this up I guess.
Greylisting is certainly a hack, but it is extremely effective. I've
only had a couple of problems before, and those have always been down to
unusually configured MTAs.
Cheers,
doug.
--
doug at isotoma.com / Isotoma, Open Source Software Consulting
Tel: 01904 567 349 / Mobile: 07879 423002 / Fax: 020 79006980
Skype: dougwinter / http://www.isotoma.com
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