Mailhardener is a service that monitors your domain(s) for any email activity. Whether it is email you send yourself, transactional emails, marketing campaigns or spammers using your domain without your consent. Mailhardener will also help you setting up your domain to prevent such spam and other fraudulent activities and monitor for any changes. With the proper setup, you not only prevent spam and fraud, but also lower the possibility of your own email being flagged as spam.
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