Am 10.02.2014 16:33, schrieb Jelle de Jong: > I have a dual stack IPv6/IPv4 postfix server that been running on > debian stable quite happy. > > postfix/smtpd[15247]: warning: hostname localhost does not resolve to > address ::1: No address associated with hostname > > 1. should I be worried? > 2. why is the warning popping up now? > > I listed some some output of my own investigation of the below > commands in my pastbin here: http://paste.debian.net/81152 > > # postconf | grep mynetworks > # cat /etc/hosts > # cat /etc/nsswitch.conf > # ping6 localhost > # cat /etc/host.conf > # cat /proc/cmdline > # getent hosts localhost > # getent hosts ::1 > > I got the feeling it may have something to do with changes in libc? > and multi on dns resolutions but I am not sure
none of your commands above makes a dns request postfix does getent - get entries from Name Service Switch libraries and so it takes the value from /etc/hosts, postfix not in other words: fix your DNS servers PTR
