On Thu, Sep 08, 2016 at 12:05:43PM +0100, Danny Horne wrote: > It's just been made aware to me that my Postfix (version 3.1.2) is > having problems with IPv6. Here's the sort of thing I see in the > logs, note it gives no indication it's an IPv6 problem > > Sep 7 16:12:59 turing postfix/smtpd[12487]: NOQUEUE: reject: RCPT > from mail-lf0-x22c.google.com[2a00:1450:4010:c07::22c]: 451 4.3.5 > <da...@lockmail.net>: Recipient address rejected: Server > configuration problem; > from=<kristian.fiskerstr...@sumptuouscapital.com> > to=<da...@lockmail.net> proto=ESMTP helo=<mail-lf0-x22c.google.com>
This single log line is not adequate to troubleshoot this problem. As advised in DEBUG_README and the list welcome message, we would need to see the other logging to know what the issue is. Also include "postconf -nf ; postconf -Mf" along with the complete non-verbose logging for that connection and delivery attempt. > This is a test someone did remotely > > | $ swaks -6 --to da...@lockmail.net --from christoph.eg...@fau.de -q TO snip -- http://rob0.nodns4.us/ Offlist GMX mail is seen only if "/dev/rob0" is in the Subject:
