On 21/02/2014 15:44, Wietse Venema wrote:
Wietse Venema: The behavior that you seem to prefer (throttle down domains after 4XX reply to "MAIL FROM") is really a bug in the Postfix SMTP client implementation.Postfix normally does not throttle down domains after 4XX reply to "MAIL FROM". The bug is that Postfix treats server-side disconnect after 421 reply as a "lost connection" error. So you should not rely on this old bug forever. It will eventually be fixed. Wietse
Get it.
Thank you
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Levi
