On 2019-01-11 13:26, Tobias Goeller wrote:

Hi All,

Anyone else having problems with customers using mail.protection.outlook.com or spf.protection.outlook.com in their SPF Records?

Just asking (both records seem to be not resolvable at the moment...)

$ dig +short spf.protection.outlook.com txt "v=spf1 ip4:207.46.100.0/24 ip4:207.46.163.0/24 ip4:65.55.169.0/24 ip4:157.56.110.0/23 ip4:157.55.234.0/24 ip4:213.199.154.0/24 ip4:213.199.180.128/26 ip4:52.100.0.0/14 include:spfa.protection.outlook.com -all"

Looks fine to me...

As for the other, you are supposed to use:

"The MX record for a domain that's enrolled in Exchange Online uses the syntax <domain>.mail.protection.outlook.com."

See: https://support.office.com/en-us/article/fix-email-delivery-issues-for-error...

Greets, Jeroen