Re: home server for email box
On Fri, Mar 10, 2023 at 12:44:25PM +0100, tomas@tuxteam.de wrote:
> On Fri, Mar 10, 2023 at 12:01:57PM +0100, Nicolas George wrote:
> > pyh@ymail.ne.jp (12023-03-10):
> > > Can I setup a mail server (postfix, dovecot, dkim, rspamd etc) on this box to receive/send email normally?
> >
> > Probably not: ISP declare IP blocks attributed to clients as “domestic”
> > and a lot of important e-mail operators block them.
>
> It makes sense to check for that. But having a static routable IP
> is a strong hint that it could work.
Well "could" is the best way to describe the chances of this working.
I think the best way too find out:
Check if the ISP will allow you to set the reverse DNS record matching
your chose A record.
If they do, GREAT! If they don't, you most likely will not be happy in the
long run.
>
> Have you more details for that "declaration" you hint at? How is
> an IP "declared" as "domestic"?
>
> > Anyway, if you have to ask, then you probably have A LOT of reading to
> > do before you have the skill to do it without making mistakes that will
> > get you blocked or worse.
>
> These days blocking goes the other way around. But if you manage to get
> SPF & DKIP up and running correctly (perhaps also DMARC) your chances
> are good.
Well it doesn't go the other way around. I think you should think DKIM
as another layer you have to worry about. All the other methods of blocking
are still there an can make you life difficult.
>
> Of course, some crappy ISPs (Microsoft, I'm looking at you, outlook.com
> and hotmail.com) insist that you register *with them directly*, it
> seems. But hey, that's Microsoft.
Yes they are horrible. And if you use greylisting you will never get past
this registration because every new confirmation request will come from a
different gateway. They are just horrible.
--
Henning Follmann | hfollmann@itcfollmann.com
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