On 10/30/2013 02:42 PM, Wietse Venema wrote:
> Andy Howell:
>> I was using telnet on the host to test it out, ie
>>
>> telnet localhost 10025
>>
>> That is resolving localhost to ::1. Doing:
>>
>> telnet 127.0.0.1 10025
>>
>> works fine.
>
> Not to criticize you in particular, but why was IPv6 enabled in
> main.cf? Is this a mis-feature of your Linux distribution?
>
> Postfix from postfix.org turns off IPv6 during installation,
> to avoid these and other surprises.
>
> Wietse
>
Wietse,
Feel free to critcise! I setup postfix 5+ years, but didn't keep up with
various upgrades.
Upgrading the exising server is problematic at best. I'm putting together a new
server,
and thus re-learning my long lost postfix knowledge :)
I'm using openSuSE 13.1 system, running as a virtual machine. I'm not married
to that
disto. I started with CentOS 6.4, but the postfix there is 3+ years old. I
wanted an RPM
based disto with more recent versions. SuSE 13.1 seemed reasonable. I find the
debian
package management too painful to work with. RPM is much easier when its
necessary to
build something from source.
Postfix is listening to ip6:
netstat -an|grep 10025
tcp 0 0 127.0.0.1:10025 0.0.0.0:* LISTEN
tcp 0 0 ::1:10025 :::* LISTEN
I should probably just disable ipv6 on the interfaces, as its not needed.
In main.cf, I have inet_interfaces = all. The only place I see a ipv6 address
in in
mydestination. I added that while troubleshooting.
mydestination = $myhostname, localhost.$mydomain, localhost, localhost[::1]
I removed that and restarted postfix. Its still listening on ::1.
I'm not sure why telnet is trying ipv6 first. In my /etc/hosts file, I have:
grep localhost /etc/hosts
127.0.0.1 localhost
::1 localhost ipv6-localhost ipv6-loopback
Thanks,
Andy
