On Wed, 20 Oct 2021 at 14:23, mick mbm@rlogin.net wrote:
No, it just complicates the SPF record. You will need an "include:" for all the mail systems which are allowed to send mail from your domain.
IIRC the SPF record can either tell recipients to reject mail that doesn't come from those mail systems, or simply say nothing about them? (I'm all for putting the effort in to improve things for the systems I know about, but I don't want to break the ones I don't know about in the process.)
(I could set up my own mail server, ...,
And you might then find that no-one will accept mail from your domain at all. As I said, it is becoming increasingly difficult to get email accepted unless it comes from a large recognised source.
Fair point.
I have looked at third parties to provide this, eg forwardemail.net, but I don't know whether that would help or hinder (and I'd still have to take care of SPF records etc)