Am 04.10.2014 um 16:04 schrieb li...@rhsoft.net:
can this setting to slow down spambots make it through
postscreen server made conditional to sleep 0 like
as example "smtp_connect_timeout"?

smtpd_client_restrictions = sleep 1
smtp_connect_timeout = ${stress?15}${stress:45}s

nevermind, works like a charme:
smtpd_client_restrictions = ${stress?sleep 0}${stress: sleep 1}

tested with increase to 5 with both directions
smtpd_client_restrictions = ${stress?sleep 0}${stress: sleep 5}
smtpd_client_restrictions = ${stress?sleep 5}${stress: sleep 0}

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