A simple test for email via IPv6

[philipp]

Am 30.04.2013 14:38, schrieb Matyas Koszik:
>
>
> On Tue, 30 Apr 2013, [utf-8] ВаНориК ХОНдатОв wrote:
>
>> Hello again,
>> many thanks for discussing the security/abuse problems with autoresponder.
>> Will it be a good solution to use sender's SMTP-server for response? Of course, i understand that this can't prevent false responses inside mail domains based on one SMTP server.
> You could just give a '550 Yes, your ipv6 works!' error message for every
> incoming message. That way you're not sending anything anywere, pushing
> the responsbility of generating a bounce back to the sender MTA, which
> should already have authenticated the sender properly. This is similar to
> your idea, but allows greater flexibility.
>
This would be the best solution - otherwise someone will eventually
abuse your service.

You could give additional infos - and you'll the the complete header
returned, too...

Philipp