As anyone figured out how to stop aws.cudaops.com from blocking Office 365 outbound emails? I know the issue is related to SPF checking, but with O365 I can't put in a static IP. So I can email out to everyone, unless they have a barracuda filter setup. The short answer is to have the owner of the barracuda filter turn off SPF checking, but in a real world setup I can't get everyone to do that. Very frustrating to deal with. Any suggestions?
Thanks in advance for any help!!