Zitat von Руслан Шарипов <ufa...@gmail.com>:
Hello.
Postfix can not resolve the IP-address, but the nameserver is
configured correctly.
See, in mail.log:
root@mail2:/var/log# tail -3 mail.log
Apr 16 02:35:44 mail2 postfix/smtpd[1855]: connect from
unknown[209.85.215.53]
Apr 16 02:35:45 mail2 postfix/smtpd[1855]: NOQUEUE: reject: RCPT from
unknown[209.85.215.53]: 450 4.7.1 Client host rejected: cannot find
your hostname, [209.85.215.53]; from=<****@gmail.com> to=<****@*****>
proto=ESMTP helo=<mail-lpp01m010-f53.google.com>
Apr 16 02:35:45 mail2 postfix/smtpd[1855]: disconnect from
unknown[209.85.215.53]
But in fact (execute in the console on the same server):
root@mail2:/var/log# host 209.85.215.53
53.215.85.209.in-addr.arpa domain name pointer mail-lpp01m010-f53.google.com.
That is, PTR-record for the IP-address is correct.
Question: Why Postfix can not resolve the IP-address?
smtpd chrooted with out-of-sync resolv.conf?
temporaery DNS problem?
The reject was a temp-fail (450 code) so the client should retry
later. What was the result for the later try?
Regards
Andreas
