Gmail rejects Mails from my domain -

HI all, from one day to the other GMAIL started to treat emails from our domain as spam and are unable to deliver. What settings do i need in DNS Zone to change it? I dont understand where it is coming from suddently. It was fine for all the years before. Our domain is hosted by exchange. Thanks!

Hello @ChristopheL3,

You can make your spf field more restrictive,
https://docs.ovh.com/ie/en/domains/web_hosting_the_spf_record/

^FabL