I currently have a server running "Ubuntu Server 12.04.1 LTS" installed with
- Bind 9 (Slave)
The postfix cannot seem to resolve my internal IPs to Name Server (PTR) entry I have within bind9 settings.
eg. I am wanting DNS to resolve
priv-000-020.internal.domain.com by using a
bind9 "168.192.in-addr.arpa record in my maste/slave folder which contains a record like this:-
$ORIGIN 0.168.192.in-addr.arpa $GENERATE 1-254 $ PTR priv-000-$.internal.domain.com
I have checked using
dig, both work fine without any issues resolving IP to the name.
I have made sure that the name server is the first in the list:-
I have also tried also going into
/etc/postfix/main.cf and added
smtp_host_lookup = native,dns
I am only using this system to relay emails to my exchange server & that works perfectly but try to get this name resolving issue fixed.
Not sure if this is important to anyone but if I remove "native" I cannot relay emails to my exchange server.
I know I can use hosts & that appears to work fine but was really wanting to keep the same setup & not have to manually enter every single IP address into the hosts file.
Hopefully someone with better linux knowledge can help me as I have wasted nearly 6 hours on trying to resolve this issue with any success.