On 05/03/2023 18:47, Nev Young wrote:
I suspect this is a naive question but I'm at a loss how to fix this.
[SNIP]
I can only agree with Steve - you need to set up SPF records which say which SMTP servers are permitted to send email for your domain.
Where Google leads, others follow, and I've found that all MS servers are doing the same thing.
Good luck.
If you use DJBDNS for your DNS I can help craft the config. As it happens, I now use PDNS but with my old data in DJB style.
Cheers, Laurie.