Hi there, Using Postfix 3.5.6 on debian 11, I would like to know if there is any possibility not to use an alternative MX for outbound email in case of a specific message with the very first attempt !
This is for a specific french ISP (Orange). In some case, you can have these log messages : *Apr 5 08:52:39 postfix-38 postfix-smtp37/smtp[21446]: DD7DE37005CF: host smtp-in.orange.fr <http://smtp-in.orange.fr>[193.252.22.65] refused to talk to me: 421 opmta1mti72nd1 smtp.orange.fr <http://smtp.orange.fr> bd3OnAY4Z6kfM Service refuse. Veuillez essayer plus tard. Service refused, please try later. OFR004_105 [105]Apr 5 08:52:40 postfix-38 postfix-smtp37/smtp[21446]: DD7DE37005CF: to=<redac...@orange.fr <redac...@orange.fr>>, relay=smtp-in.orange.fr <http://smtp-in.orange.fr>[80.12.242.9]:25, delay=2.3, delays=0.03/0.31/2/0, dsn=4.0.0, status=deferred (host smtp-in.orange.fr <http://smtp-in.orange.fr>[80.12.242.9] refused to talk to me: 421 opmta1mti72nd1 smtp.orange.fr <http://smtp.orange.fr> bd3PnAY4i6kfM Service refuse. Veuillez essayer plus tard. Service refused, please try later. OFR_999 [999])* The first line means 'Too many connexions within the last hour, this IP will be block for 2 hours' The second line means 'Your IP is blocked for 2 hours' Is there any possibility, if we see the first message, to put it in a deferred status with this message ? Regards, -- Yves-Marie LE PORS-CHAUVEL Email Product Manager 23, rue du Bignon - 35 135 Chantepie www.ccmbenchmark.com