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- I have been told that I need to set up a reverse DNS pointer or use a mail relay. What should I do?
Important: This article is intended for mail or site administrators.
Your email may be relayed to Virginia Tech via another domain. That domain is being blocked by the Virginia Tech mail system. Two possible solutions are:
- Configure your reverse DNS pointer. Messages may be blocked from being sent to Virginia Tech affiliates because the mail server, firewall, or NAT gateway's external IP address resolves to a name that is on Virginia Tech's blocked sites list. Reverse DNS pointers must be configured with the server's Internet Service Provider (ISP). Contact your ISP for more information.
- Use your ISP's outbound SMTP relay. Virginia Tech's mail filtering system will block an email message if the message is relayed to us by any domain listed on the blocked sites list. You may be able to route your email messages through your ISP's mail server or outbound SMTP relay. To determine if this is possible, contact your ISP. Even though the Virginia Tech mail system may block portions of ISPs' networks, it attempts to leave the providers' servers unblocked.