Apple/iCloud, (hopefully you're here on this list?)
I'm just noticing that some emails (both spams and hand-typed legit email) are being sent from 57.103.74.0/24 - and some or all of these IPs don't have a PTR record. Also, they're being sent from @icloud.com and @me.com addresses, and they're passing SPF. But, again, they are often not returning a PTR record for some or all of these IPs. Some of these were sent as recently as today.
Please investigate/fix. Thanks! Rob McEwen, invaluement _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop