Hi,
I am trying out the postscreen server - and am very impressed so far. My
original interest was in greylisting - so I have the deep protocol tests
turned on so that the temporary failure code 45x is returned for
non-whitelisted clients.
During my testing - I noticed that the small trickle of spam that still
makes it past postscreen reattempts immediately after a 45x with no
delay, whereas genuine mail will wait at least a few minutes before
reattempting after a 45x.
So - my question - do we know if it will be possible to enforce a delay
after the 45x before a reconnect is accepted? I have seen references to
a postcreen_greylist_threshold parameter in a postscreen strawman
document, and am wondering whether this, or some other configuration
will allow the exclusion of clients who respond instantly to a 45x?
Best regards,
Craig
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