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How to use Active Directory to filter spam in ORF

2025-01-14 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Servers >

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This article mainly explains "how ORF uses Active Directory to filter spam". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how ORF uses Active Directory to filter spam".

This paper mainly introduces how to use Active Directory filtering configuration in ORF anti-spam system. The details are as follows.

Some mail systems (such as exchange2000) cannot directly reject the mail of invalid recipients in the smtp session, but accept it first and then send a NDR to the original recipient, while most of the spam senders and domain names are false, resulting in a large number of NDR piling up in the sending queue, affecting the sending of normal mail, and even leading to a decline in system performance. There is also a problem that because of sending a large amount of spam NDR, foreign anti-spam takes your server as a source of spam and adds your server to the blacklist. As a result, your normal email cannot be sent abroad.

ORF can directly judge whether the recipient is valid in the smtp session. If the recipient does not exist, it sends a rejection instruction directly in the smtp session. The sender server receives the rejection instruction and automatically sends NDR to the original sender. The ultimate goal is to assign the NDR sending task to the sender server.

(1) enable Active Directory in the management tool

(2) enter the settings of Active Directory

(3) in general, there is no need to modify the setting of Active Directory, but you can also make some changes according to your actual needs.

(4) configure the rejection message in the smtp session

(5) Test, send an email to a fake mailbox

Thank you for your reading, the above is the content of "how ORF uses Active Directory to filter spam". After the study of this article, I believe you have a deeper understanding of how ORF uses Active Directory to filter spam, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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