Postfix and PTR record issues

[Tim]

Allegedly, on or about 09 February 2016, arnaud gaboury sent:

> When looking at my DNS provider (Hurricane Electric), I effectively
> have no PTR record. I must set one but honestly, I am far from
> understanding everything about PTR.

Unless you have a unique IP, one that's always assigned solely to you,
your ISP is unlikely to set a PTR record for you.  Usually, they share
addresses, one way or another (e.g. dynamic IPs) between their users,
and PTRs point to their own hostnames.

-- 
[tim at localhost ~]$ uname -rsvp
Linux 3.9.10-100.fc17.x86_64 #1 SMP Sun Jul 14 01:31:27 UTC 2013 x86_64

Boilerplate:  All mail to my mailbox is automatically deleted, there is
no point trying to privately email me, I only get to see the messages
posted to the mailing list.