When can we reach iCloud?

[#1]

Emails to iCloud are still being rejected "due to local policy". This typically happens when Apple's internal filters decide the messages or sending practices do not meet their standards. I know this has been a problem even before Plusnet transferred the email service to Greenby. But when will it be solved?

[#2]

The last time I had a failure to friend@icloud.com and friend@mac.com I re-sent the email as plain text and it wasn't bounced - could be coincidence of course.

[#3]

iCloud delivery rejections repeatedly looks like :

Reporting-MTA: dns; avasout-peh-002 [212.159.14.18]
Received-From-MTA: dns; hp=laptop [86.30.96.254]
Arrival-Date: Fri, 12 Dec 2025 09:20:16 +0000


Final-recipient: rfc822; forename.surname@icloud.com
Diagnostic-Code: smtp; 554 5.7.1 [BS01] Message rejected due to local policy. Please visit https://support.apple.com/en-us/HT204137

Last-attempt-Date: Fri, 12 Dec 2025 09:20:21 +0000

[#4]

Useful info. The iCloud rejections started about 2 months ago without any changes in my classic Outlook 2019 program.