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Email Relaying - Vulnerability Report



has anyone experienced the following issue. We recently did a vulnerability detection report and have received a high warning for the following issue: NVT: Mail relaying (thorough test)


In summary, the remote SMTP server appears to be insufficiently protected against relaying. This means that spammers might be able to use your mail server to send their mails to the world.


Solution: upgrade your software or improve the configuration so that your SMTP server cannot be used as a relay any more.


Is there a fix for the issue or does anyone know how to resolve it?