On Fri, Mar 10, 2023 at 12:44:25PM +0100, to...@tuxteam.de wrote: > On Fri, Mar 10, 2023 at 12:01:57PM +0100, Nicolas George wrote: > > p...@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 | hfollm...@itcfollmann.com
