[nylug-talk] Mail servers on dynamic IP addresses soon to be shunned nearly everywhere.

[Ron Guerin]

(this was supposed to go to this list before)

Michael B Allen wrote:
> On Sat, 03 Feb 2007 15:09:15 -0500
> Ron Guerin <rguerin at nylug.org> wrote:
> 
>> Just a heads-up for our listmembers....
>>
>> MAAWG is the Messaging Anti Abuse Working Group.  It seems that if
>> you're running a mail server on a dynamic IP address (and no one cares
>> if your dynamic address never changes, that's completely irrelevant),
>> and not using a smarthost, your mail isn't going to be going anywhere,
> 
> FYI, if you're on a dynamic IP there's a good chance a large amount of
> your mail is being dropped by spam filters since they know who's dynamic.

Be careful making that statement, because they don't really know who's
dynamic (since there's no way to tell), and the primary source of the
rulings on what's dynamic or not is a list of IPs provided by their
holders[1], who often submit inaccurate lists.  One common chore I deal
with for people is getting them off those lists, when they don't belong
on them.

> If you care that much about your email, get a VPS with root and a fixed
> IP for $20/mo.

That's good advice in general, for those who can afford it at least.  I
have a story to tell about that, but since it has nothing to do with
dynamic IPs (or the accuracy of lists of them), I'll save it for later.

- Ron

[1] I said "owners" in a previous message which is of course, wrong. You
can pay money to obtain the use of an IP (or domain) for a specific
period of time, but you acquire no ownership rights in them, despite
what some registrars say on their sites.