We are located in Belgium, using one O365 tenant, located in central Europe. We use Mimecast Cloud integrated, located on German servers.
We are currently running a Mimecast DMARC Analyzer trial, who shows 1 message failing on DKIM and SPF, as it seems it was passing via za-smtp-delivery-40.mimecast.co.za, I suppose one of Mimecast's South African server.
The message failed on DKIM, SPF, ...
Do I need to add the South African server to our SPF record?
Thanks
Jan