On 2/2/11 7:23 PM, JKL wrote:
On 02/02/2011 06:17 PM, Victor Duchovni wrote:
On Wed, Feb 02, 2011 at 05:30:52PM +0100, J4K wrote:

The smtpd has a 'sleep 3' at the start of it.   Might this have been the
cause?  If so, then it served the purpose.

smtpd_recipient_restrictions = sleep 3,
permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination,
reject_non_fqdn_sender, reject_rbl_client
hostkarma.junkemailfilter.com=127.0.0.2, reject_rbl_client zen.spamhaus.org
Unconditional "sleep<n>" applied even to servers that repeatedly pass
the test damages email infrastructure (by forcing legitimate servers
to expand substantially more resources, and delaying their email to
other destinations). Please don't do this. Consider upgrading to Postfix
2.8 and deploying postscreen(8) which remembers which servers pass the
test.

Valid point.  I have removed the sleep condition and shall see how much
extra spam is received.  I shall upgrade to 2.8  and postscreen when its
available as a Debian package.

Debian won't have 2.8 in stable until at least 2013, although you may be able to get it as a backport later this year:

http://packages.debian.org/search?keywords=postfix

They lag behind something awful.

--
J.

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