MDaemon6.03的SMTP验证方法

我在数据局托管了一台服务器,安装了独立的邮件服务器软件MDaemon6.03,今天机房人员打电话给我说,我的邮件服务器正在向处发大量的垃圾邮件,叫我尽快处理,不然的话就要封掉我的IP啊.

请问从哪里看出来的?

是如何识别的?

我当前应当怎么处理?
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停止发送垃圾邮件。
现在就连 Foxmail5都可以识别大部分垃圾邮件，还是不要发这种邮件了，意义不大。

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停止SMTP，或要求SMTP发送验证
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upgrade to 6.8.4 , then see this article:

http://www.altn.com/support/Knowledge_Base_Article.asp?product_id=MDaemon&txtKeywords=SMTP&txtNumber=&Number=KBA-01208

Configuring MDaemon 3.x to force users to check mail before sending
KBA-01208

Purpose & Scope

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For added security, you can force your users to POP before sending mail.

Procedure

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From the MDaemon Menu bar:

Click Setup
Click Security settings...
Click IP Shielding
Check the box for Local Sender Must Have Checked POP MailBox Within Last XX Minutes
Enter the Number of Minutes to wait in the XX field
Click the OK button
With this feature enabled, before a person who claims to be a local user can send a message they must have checked their mail within the number of minutes specified.

Additional Comments

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This option will not work with WorldClient Standard. WorldClient Standard does not support POP3 commands.

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先把SMTP停了，修改SMTP密码，有可能是盗用。还可以要求邮件中间包含一些关键才允许发送。
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有可能别人用程序，调用你的COM大量发送邮件。

现在谁都有几个垃圾邮件发送程序。
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