Forum Discussion
Exchange Online Protection SPF record
Hi, I have received a message sent via Exchange Online host IPv6 "2603:10a6:20b:c0::31". The message was marked as spam because of SPF fail. Subnet "2603:10a6:20b:c0::/64" is not in the list of O365 ...
error404 RNalivaika PeterRising
Did you happen to move your core customer data to another geolocation lately? I believe that this might be related ...
Anfordern der Datenverschiebung - Microsoft 365 Enterprise | Microsoft Docs
Rick Looks like that is not related.
I am using as SPF include:spf.protection.outlook.com, most of e-mails go with corrct ip adresses, but few are using incorrect ones.
Another one record i found is spf.protection.outlook.de that is related only to Germany, but our tenant have nothing to do with Gernany, also those few e-mails are never sent from those IPs.
