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You can make sure to disable NDR and use good rbl list filtering. You can also try registering an spf record in dns for you domain. Lastly, monitor your network traffic to ensure the traffic is coming from your mailserver and not somewhere else on your network.
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You can make sure to disable NDR and use good rbl list filtering. You can also try registering an spf record in dns for you domain. Lastly, monitor your network traffic to ensure the traffic is coming from your mailserver and not somewhere else on your network.

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Could you explain a little more?, i didn't understand most of your answer :p
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Could you explain a little more?, i didn't understand most of your answer :p

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Hi.<br />
<br />
I noticed that my IP was blacklisted on some mail services because it is used for backscattering... my mail server uses qmail, how can i configure it correctly to stop this situation?<br />
<br />
Thanks
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Hi.

I noticed that my IP was blacklisted on some mail services because it is used for backscattering... my mail server uses qmail, how can i configure it correctly to stop this situation?

Thanks

How might I stop BACKSCATTER using Qmail?

A vulnerability is a weakness which allows an attacker to reduce a system's information assurance. Vulnerability is the intersection of three elements: a system susceptibility or flaw, attacker access to the flaw, and attacker capability to exploit the flaw. To exploit a vulnerability, an attacker must have at least one applicable tool or technique that can connect to a system weakness, known as the attack surface. Vulnerability management is the cyclical practice of identifying, classifying, remediating, and mitigating vulnerabilities. Other vulnerabilities include security risks, security defects and constructs in programming languages that are difficult to use properly.

Vulnerabilities

An email client, email reader or more formally mail user agent (MUA) is a computer program used to access and manage a user's email. A web application that provides message management, composition, and reception functions is sometimes also considered an email client, but more commonly referred to as webmail.

Email Software

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.