On 25 January 2017 at 19:17, Danny Horne <da...@trisect.uk> wrote: > Hi all, > > Can anyone decipher this? If by 'recipient address' they mean mine, I > receive email from many different sources on that address all the time, > so don't know what this entry is telling me. > > Jan 25 19:06:59 turing postfix/smtpd[7772]: NOQUEUE: reject: RCPT from > mx-out-04c.sjc1.discourse.org[2001:470:1:3a8::242]: 451 4.3.5 > <da...@trisect.uk>: Recipient address rejected: Server configuration > problem; > from=<ntppool+verp-7b95e718592cb9b906c901a9dea97...@discoursemail.com> > to=<da...@trisect.uk> proto=ESMTP helo=<mx-out-04c.sjc1.discourse.org> > > Thanks for looking >
The key text must be 'Server configuration problem'. I think you should look at earlier lines in your log which might tell you what your configuration problem is. See http://www.postfix.org/DEBUG_README.html. I note that the incoming mail was via ipv6, could the problem be somehow connected with this?
