Hi Benoît, A lot more than ISPConfig has that error string. For example, I've encountered it from an site using Amavisd in response to invalid MIME encoding in a campaign.
I'd be looking at the actual originating message to see if there are any obvious abnormalities with it, such as duplicate headers etc. Ken. On Fri, 2017-06-09 at 09:30 +0200, Benoit Panizzon wrote: > Hello > > We have a 'challenging' problem between two companies sending each other > emails. > > The sender keeps getting notifications, that his emails to the > recipient are delayed. But this is not true. Analyzing the email > headers the recipient sent me I can confirm, the emails take about two > seconds! from sender to the recipient. > > The sender, if I got that right from the headers, uses Lotus Notes and > is relaying messages via the SMTP server of his ISP, which relays it to > our postfix server. > > I suspect the message "250 2.6.0 Bad message, but will be delivered > anyway" is somehow generated by lotus notes or an intermediary email > scanner and lotus notes translates this to 'your message could not be > delivered and is being delayed, the server will continue to try to > deliver the email' > > The recipient uses an exchange server behind a postfix based email > scanner service. After sniffing the connections and looking at the logs, > I am pretty sure, the "250 2.6.0 Bad message, but will be delivered > anyway" is not generated from our postfix server, or from our > customer's exchange server. > > But the sender tells me, that this message only shows, when he is > sending an email to our customer. > > Has anyone seen such a message and has any clue what causes it, and > also what causes lotus notes to send an DSN telling the sender the > message could not be delivered, despite the message being delivered > perfectly in time? > > Google tells me that "250 2.6.0 Bad message, but will be delivered > anyway" is an error message generated by ISPConfig. But as far as I > found out, no server relaying the email uses this mailer. > > Kind regards > > -Benoît Panizzon- _______________________________________________ mailop mailing list [email protected] https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
