On Thu, Sep 08, 2016 at 02:18:41PM +0100, Danny Horne wrote:
> Thanks for the reply, I found the following site which showed me I 
> was seriously lacking in my IPv6 config.  I think I've got it fixed 
> now (email from GMail came through on an IPv6 address)
> 
> http://www.postfix.org/IPV6_README.html

Good, glad to hear it.

The following is WRONG and BAD advice from multiple perspectives, but 
it's my own little opinion and I am sticking with it. :)

I am not in any hurry to move my email into IPv6 land.  For now I am 
satisfied to have IPv4-only MX records for my domains.  My server is 
IPv4-only, for that matter.

Why?  Well, in IPv4 the spam problem, while not solved, is well under 
control.  But when spammers move into IPv6, and they *will* when it 
is in more widespread use, spam is going to be a huge mess.  The 
tools which work so well in IPv4, namely DNSBL services, won't cope 
with IPv6.

I think the only thing which will work for IPv6 would be a new 
paradigm of default-deny and whitelisting, rather than the IPv4 way 
of default-allow and blacklisting.

Yes, I do acknowledge the necessity to move toward IPv6, but it's a 
long way off before there are any significant IPv6-only email sites.
Right now if you're unable to do mail on IPv4, you're going to be cut 
off from large parts of the Internet.

I don't want to be a pioneer before then. :)
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