On 27.11.2024 09:50, Suresh Ramasubramanian via mailop wrote:
There can be multiple causes for this error - which will have to be gone into on a case by case basis. Please, as I said, open a ticket  with [email protected] or better still, have your provider open the ticket  for you.

Thanks, Suresh - will do as soon as the next issues appears.

Those in question are more than two weeks old now.

        -C.

From: mailop <[email protected]> on behalf of Carsten Schiefner via mailop <[email protected]>
Date: Wednesday, 27 November 2024 at 1:33 PM
To: [email protected] <[email protected]>
Subject: Re: [mailop] Certain ESPs and mailing lists

Andy,

On 27.11.2024 08:49, Simplelists - Andy Beverley via mailop wrote:
<[email protected]>: host 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
<https://support.apple.com/en-us/HT204137> (in reply to end of DATA
command)

My experience of this particular error message from Apple iCloud is that it's content related and generally a blacklisted URL or domain in the body of the email.

thank you very much, too, for this piece of information.

Tying all these pieces together will hope fully help my MLSP to get this
sorted.

Cheers,

         -C.
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