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? p.s. postfix 2.7.1, debian 6.0.4 -- С уважением, Шарипов Руслан. Руководитель отдела разработки и сопровождения программного обеспечения ОАО "Уфанет". Контактная информация: google+: http://gplus.to/ruslan jid: sera...@jabber.ufanet.ru wave: ufa...@googlewave.com skype: ufaweb phone: +7(917)4775460 vkontakte: http://vkontakte.ru/ufaweb myspace: http://www.myspace.com/ufaweb facebook: http://facebook.com/sharipov linkedin: http://www.linkedin.com/in/ufaweb twitter: http://twitter.com/ufaweb
