Can't send emails from my cloudflare domain from my Mac

[laura_christopherson]

What is the name of the domain?

laura-c.com

What is the error message?

Verify that you have addressed this message correctly. Check your SMTP server settings in Mail preferences and verify any advanced settings with your system administrator. The server response was: <45-30-22-7.lightspeed.nsvltn.sbcglobal.net[45.30.22.7]>: Client host rejected: Access denied

What is the issue you’re encountering

can not send emails from my cloudflare domian laura-c.com from my Mac - works from my iPad and my iPhone

What steps have you taken to resolve the issue?

read the apple help, all apple settings seem good. searched cloudflare help, does not seem to have any tips.

What are the steps to reproduce the issue?

write and send an email to any address from iCloud mail on Mac Book Pro Sonoma 14.5

Screenshot of the error

[zakri]

Currently, your MX record for domain laura-c.com is pointing to iCloud server, as indicated below:

;; ANSWER SECTION:
laura-c.com.		3600	IN	MX	10 mx01.mail.icloud.com.
laura-c.com.		3600	IN	MX	10 mx02.mail.icloud.com.

To any potential email delivery issues, it is recommended that you contact your email provider for further assistance. Specifically, you should inquire about the IP reputation associated with your domain, as this can significantly impact deliverability.

Additionally, you will request to obtain the necessary SPF, DKIM, and DMARC records from them to add in your DNS zone for your domain.