On 2021-01-05 Ruben Safir wrote: > Any clue why this is happening from the cointalk.com domain > I am locked out of the forum :) > > 2021-01-05T03:11:38.999012-05:00 www2 postfix/smtpd[26176]: NOQUEUE: > reject: RCPT from 23-111-188-110.static.hvvc.us[23.111.188.110]: 450 > 4.1.8 <ng...@server.cointalk.com>: Sender address rejected: Domain not > found; from=<ng...@server.cointalk.com> to=<faceb...@mrbrklyn.com> > proto=ESMTP helo=<server.cointalk.com> > www2:~ # grep cointalk /var/log/mail|less > > > www2:~ # dig mx ng...@server.cointalk.com > > ; <<>> DiG 9.9.2 <<>> mx ng...@server.cointalk.com > ;; global options: +cmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 58851 > ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 > > ;; OPT PSEUDOSECTION: > ; EDNS: version: 0, flags:; udp: 4096 > ;; QUESTION SECTION: > ;nginx\@server.cointalk.com. IN MX
Your lookup is incorrect. The domain in question is server.cointalk.com, not ng...@server.cointalk.com. The latter is the sender e-mail address (localpart@domain). The cause of the problem, however, is that there is no A record for server.cointalk.com: me@localhost:~ $ host server.cointalk.com Host server.cointalk.com not found: 3(NXDOMAIN) Postfix rejects the mail because it cannot resolve the sender domain. Regards Ansgar Wiechers -- "Abstractions save us time working, but they don't save us time learning." --Joel Spolsky
