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Use the following free tools to check your domain and mail server for configuration errors

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About Us

MXGuardian is a cloud-based email spam and malware filtering service that works silently in the background to protect your users from phishing attacks, viruses, spam, denial-of-service (DoS) attacks and other email threats. It frees up your mail server so it only has to deal with legitimate messages and provides a backup MX service to prevent messages from bouncing in case your server is temporarily down or unreachable.

MXGuardian is designed for businesses, ISPs, web-hosting companies, or anyone who has a domain that receives email. We’re also compatible with popular cloud platforms such as Microsoft Office 365 and Google G Suite.

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US/Canada: (866) 788-1414
International: +1-312-300-3320

Sales: sales@mxguardian.net
Support: support@mxguardian.net

MXGuardian, LLC
P.O. Box 11733
Chicago, IL 60611