There are current issues with iCloud Mail where the wrong EHLO domain is being sent during email transmission, leading to emails sent to users being dropped. Users have reported difficulties escalating these issues beyond Apple's level 1 support. The DNS misconfiguration appears to stem from the iCloud SMTP server's setup, specifically with the lengthy domain name used in the emails sent from the service. Users have shared mixed experiences, with reports of bouncing emails particularly affecting alias forwarding setups. Some are questioning if these issues are recent as prior interactions seemed seamless. Suggestions for user escalation include contacting Apple via postmaster or hostmaster emails, though these methods are not traditional and could vary in effectiveness.