How to block emails from someone7/2/2023 ![]() ![]() ![]() Using the setting I mention above would block this (unintended consequences). There is a potential gotcha hear though as some of your healthcare providers, survey companies, HR management companies, etc like to send e-mail to your users (with your permission) using your domain name. Most (if not all) SPAM filters have a setting to reject all external e-mail using your domain name. ![]() You should be able to block external e-mail using your domain from being delivered to your users. You have no control over what other's receive, unfortunately. The world is not required to follow your recommendation. Your SPF record tells the world what YOU say is legitimate e-mail. The receiving server has to be configured to reject e-mail per the SPF record to have a shot at success. But, this does not mean someone can't send e-mail on your behalf from a server outside your control. You definitely want to set up SPF records at a minimum, and DKIM/DMARC if you can. Michael-AK wrote:How can I stop/block someone sending emails using my domain email address?Īs far as I know, you can't as long as you don't ensure that all email servers world wide aren't configured to only accept authenticated and authorized emails.
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