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Subject: Re: RBL use and unavailable RBL servers
From: Len Conrad (lconradGo2France.com)
Date: Wed Nov 01 2000 - 14:06:18 CST

AAll DNS lookups are subject to timeout, and RBL is no exception.
>If RBL lookup times out the mail will be received.
>
> Wietse

I follow the Lyris list. They're currently complaining about Yahoo's
very slow SMTPD's effectively tarpitting large percentages of Lyris'
SMTP processes, effectively slowing overall Lyris deliveries.

How would postfix react to such slow SMTPD sessions and can postfix
be made more "impatient" to decide more quickly to abort the
sesssion, defer the msg, and free up its SMTP client process slot?

And do I remember some discussion here about postfix or a patch that
caused postfix to shuttle deferrals to another server rather than to
postifix local deferred, so the other server gets delegated with the
fat queue and retry efforts?

Len

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