Dear Community members,
Over the next few days, Alfresco will be making some changes that will prevent emails from being sent from its domains by unapproved senders. Emails sent from alfresco.com domains by unapproved senders are not allowed and will be blocked going forward. The most common example is the use of admin.alfresco.com.
We advise that you review your configuration (mail.from.default in Alfresco global properties) and ensure that admin@alfresco.com is replaced with another email address with your domain or your domain of choice.