Re: DNSBL and IPv6

>> Probably not, although I'm waiting for ESPs to figure out that if they
>> send every message from a different IP,
>
>I thought of that but I wouldn't be surprised to overflow the router's
>ARP table

Well, yes, if you configure stuff in a naive way.  I'd route an entire
/64 to the mail server, and configure the server as its own router
with all of those IP addresses internally forwarded to a single IP
that talks to the outside world.  If you wanted to do IP hopping,
it wouldn't be hard to do.

>> it'll be much easier to process bounces and complaints since all
>> they'll need is the IP to figure out what the list and address was.
>
>Is it? For mailing-lists, I think VERP is simpler and more robust.

Depends what your intentions are.  If you're trying to do listwashing,
you may wall see DNSBL listings rather than bounces.  I like VERP just
fine and my lists use it, but I do get back FBL reports that are
munged to the point where I can't tell who complained.  But they
rarely munge the IP.

R's,
John