If you haven’t already opened a ticket with icloudad...@apple.com please do so.
--srs ________________________________ From: mailop <mailop-boun...@mailop.org> on behalf of Mark Fletcher via mailop <mailop@mailop.org> Sent: Tuesday, November 26, 2024 10:54:06 PM To: Carsten Schiefner <carsten@schiefner.berlin> Cc: mailop@mailop.org <mailop@mailop.org> Subject: Re: [mailop] Certain ESPs and mailing lists On Tue, Nov 26, 2024 at 6:23 AM Carsten Schiefner via mailop <mailop@mailop.org<mailto:mailop@mailop.org>> wrote: <...@icloud.com<http://icloud.com>>: host mx01.mail.icloud.com<http://mx01.mail.icloud.com>[17.56.9.31] said: 554 5.7.1 [CS01] Message rejected due to local policy. Please visit https://support.apple.com/en-us/HT204137 (in reply to end of DATA command) There it reads "iCloud Mail authenticates all inbound emails using SPF and DKIM" - is this 'and' a strict requirement? As in: "All inbound emails must have proper SPF *and* DKIM"? If so then I already know to whom to talk to... No idea. We've had SPF and DKIM forever, and would still see CS01 errors. Here's the (maybe incomplete) list of all errors we've seen and (possibly wrong) delivery interpretations wrt group email delivery: CS01 - Will be accepted by many/most recipients CS02 - Something wrong with the email, will be rejected by all recipients HM07 - Something wrong with the email, will be rejected by all recipients HM08 - Will be accepted by many/most recipients AB01 - You're being blocked, all email to Apple will fail I've seen some instances of HM07 where it seems the reason is that they contain Constant Contact links. Cheers, Mark
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