I have a weird new install where mail comes in okay but trying to send out just hangs with no real feedback as to why but just now an attempt to send to Gmail gave me a hint...
"Our system has detected that this message does not meet IPv6 sending guidelines regarding PTR records and authentication. Please review https://support.google.com/mail/?p=ipv6_authentication_error for more information." So it seems that maybe courier-mta is trying to use ipv6 and seeing that I'm not sure how to deal set up ipv6 I would like to completely disable courier-mta (and imap for that matter) using ipv6 and default to ipv4. I've set courierd:ESMTP_PREFER_IPV6_MX=0 but what other settings might influence using ipv6 over ipv4? Ubuntu xenial (16.04) using courier-mta 0.75.0-17+deb.sury.org~xenial+1 ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785471&iu=/4140 _______________________________________________ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
