Today I have changed my DSL modem and problems with postfix begun. It receives mail, but cannot send any. In logs I can read Jun 22 19:39:53 server postfix/smtp[5040]: 9A51711FF85: to=address at somedomain.com, relay=none, delay=12840, status=deferred (Host or domain name not found. Name service error for name=somedomain.com type=MX: Host not found, try again) My resolv.conf is proper. I can ping any server, but postfix cannot see them. What can I do ? Postfix 2.1.5 Best Regards Kuba ---------------------------------------------------------------------- OMNIXMAIL! Jesli masz telefon w sieci Era i dostep do WAP, to mozesz na komorce odbierac poczte ze wszystkich swoich kont poczty e-mail! OMNIXMAIL jest w Era Omnix: http://link.interia.pl/f1896
Was your old DSL modem working as a DNS proxy but this hasn't been enabled (or isn't supported or isn't working well) on the new one? Can you resolve addresses on the server using dig? Can you put the old DSL modem back in place to see if the problem goes away? -----Original Message----- From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On Behalf Of Jakub Wojtanowski Sent: 23 June 2005 07:42 To: centos at centos.org Subject: [CentOS] Postfix problem with DNS Today I have changed my DSL modem and problems with postfix begun. It receives mail, but cannot send any. In logs I can read Jun 22 19:39:53 server postfix/smtp[5040]: 9A51711FF85: to=address at somedomain.com, relay=none, delay=12840, status=deferred (Host or domain name not found. Name service error for name=somedomain.com type=MX: Host not found, try again) My resolv.conf is proper. I can ping any server, but postfix cannot see them. What can I do ? Postfix 2.1.5 Best Regards Kuba ---------------------------------------------------------------------- OMNIXMAIL! Jesli masz telefon w sieci Era i dostep do WAP, to mozesz na komorce odbierac poczte ze wszystkich swoich kont poczty e-mail! OMNIXMAIL jest w Era Omnix: http://link.interia.pl/f1896 _______________________________________________ CentOS mailing list CentOS at centos.org http://lists.centos.org/mailman/listinfo/centos
Jakub Wojtanowski wrote:> Today I have changed my DSL modem and problems with postfix begun. It > receives mail, but cannot send any. In logs I can read > > Jun 22 19:39:53 server postfix/smtp[5040]: 9A51711FF85: > to@? ??F?Q?Pn???, relay=none, delay=12840, status=deferred (Host or> domain name not found. Name service error for name=somedomain.com type=MX: > Host not found, try again) > > My resolv.conf is proper. I can ping any server, but postfix cannot see > them. > What can I do ? > Postfix 2.1.5Running in a chroot jail? Make sure you also edit the resolv.conf in the chroot jail.