Forum Discussion
Hotmail emails sent from 365 outlook website are failing SPF
Greetings,
We've just recently realized that any emails sent from our 365 account using the web interface with our original @ hotmail.com account are being flagged as spam for SPF failure. The exact same emails sent with a from @ outlook.com pass just fine.
Here is an example from the logs:
Authentication-Results: mx-inbound41-6.us-east-2c.ess.aws.cudaops.com; spf=fail (sender IP is 104.36.18.41) smtp.mailfrom=email address removed for privacy reasons; dkim=fail (nil) header.d=nil; dmarc=none action= header.from=email address removed for privacy reasons
Received-SPF: fail (mx-inbound41-6.us-east-2c.ess.aws.cudaops.com: domain of email address removed for privacy reasons does not designate 104.36.18.41 as permitted sender)
As you can imagine this is a big issue for us, as our hotmail account has been in use for 20+ years and has all sorts of website authentications attached to it.
Can someone please look into this, add the proper SPF to the @ hotmail.com dns and resolve?
Cheers,
Ajar
2 Replies
Can further elaborate on how you are sending Email under your tenant by using hotmail.com?
At some point in the past, hotmail.com was migrated to https://outlook.live.com/, thus all hotmail accounts became outlook.com accounts. The hotmail email addresses on those accounts are the default outbound sending email addresses on those Outlook accounts....
