Postgrey Options

Matthew Walker rorith at
Tue Feb 12 08:01:59 MST 2008

On Tue, February 12, 2008 7:58 am, Chris Carey wrote:
> What configuration options are you all using? I have the delay set to
> 1 minute (I believe the default is 5 minutes). Do you find that a
> longer delay actually helps significantly more? From what I remember
> in the documentation, the theory is that in that delay time, the
> chances of the spamming source getting put on a blacklist increases.
> This way, when the message finally makes it through, its finally on a
> blacklist and spamassassin has a better chance of catching spam. Do
> you find this to be the case?
> --chris

Mine is set to 5 minutes, but I doubt it would change my stats significantly to switch
it to 1 minute. The primary thing Postgrey is designed to stop is /not/ normal mail
servers. It's spamming programs that simply fire and forget each message. If they don't
maintain a proper queue and retry like a normal mail server, they'll almost never manage
to actually get past Postgrey.

The theory about blacklists is intriguing, but I have my doubts about how often
something like that happens. I also don't feel like doing the detailed log analysis
necessary to see how true it is. :)

Matthew Walker
Kydance Hosting & Consulting
LAMP Specialist

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