Customer “Forgot Password” email not sending.

Magento 2.4.3-p1

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When clicking on “Forgot Password” from front end, customer is greeted with :

“If there is an account associated with [email protected] you will receive an email with a link to reset your password.”

However, no email is received. And under email logs in Magento back-end there is no password reset email sent. Every other email works perfectly.

Then I tried to reset password from Customers in the back-end. Again greeted with a message and green tick “The customer will receive an email with a link to reset password.” But no email received and no email sent out via email log.

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Does anyone have any suggestions on what the possible cause could be?