I have a non-profit I support that uses O365. I need to update their SPF record to include a range of ips from which a vendor sends e-mail on their behalf.
The current record is: v=spf1 include:spf.protection.outlook.com -all My proposed record is: v=spf1 ip4:x.x.x.x/28 include:spf.protection.outlook.com -all Does this look correct? I'd hate to break their ability to have mail delivered. Thank you, RS
