Le 19/03/2018 à 16:28, Wietse Venema a écrit :
Please provide quantitative evidence that connection reuse is necessary to get mail into the 'big providers' (i.e. they punish connection rate and message rate differently).
Hi Wietse, The biggest email service provider in France : Orange/Wanadoo. We needed to disable TLS to reuse connections : postconf -P "orange/unix/smtp_tls_security_level=none" Here are their rules, got from ab...@orange.fr and confirmed by our logs : - Maximum 1000 connections per hour - Maximum 100 emails by connection - Maximum 3 simultaneous connections A website about that : http://www.delivernow.eu/en/european-isp/orange-protects-its-messaging-infrastructure-with-cloudmark-antispam-solution-3 Sample of SMTP reply in case of problem :
smtp-in.orange.fr[193.252.22.65] refused to talk to me: 421 mwinf5c01 ME Service refuse. Veuillez essayer plus tard. Service refused, please try later. OFR005_105 [105]
host smtp.wanadoo.fr[80.12.242.15] refused to talk to me: 421 mwinf5c26 ME Trop de connexions, veuillez verifier votre configuration. Too many connections, slow down. OFR004_104 [104]
Guillaume
