On Sat, Mar 11, 2023 at 05:04:48AM +0800, Jeremy Ardley wrote: > > On 10/3/23 23:52, Henning Follmann wrote: > > > > 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. > > All you need to do is generate an SPF record authorising your fixed IP(s) to > send mail for your domain(s). For those mail providers which go by SPF/DKIM. Some go by reverse DNS, some by some kind of RBL, some by voodoo. Unfortunately, there is some creativity in there. I guess this is in part intended, since big players see a decentralised comms infrastructure as a threat to their (silo) business model. Alas. Cheers -- t
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