In Marketing, when authenticating domains, we get keys for Ownership and DKIM. But it is also recommended to add SPF Record for each domain on the DNS.
The problem now is that when sending test-send or send-now, recipients on Exchange/Outlook does NOT recieve any emails, even though Marketing says they are delivered.
Recipient using i.ex. Gmail works just fine on the same sendout.
Anyone experienced this before? I suspect it has something todo with setting up SPF records, but not sure.