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email relay

About this tag
This tag covers discussions about email relay configurations, particularly SMTP relay security on Windows servers. Topics include preventing unauthorized relay use, authentication settings, and managing spam outbreaks caused by exploited relays. Users share experiences with SmarterMail on Windows Server 2008, adjusting relay permissions from "Nobody" to "Only local users," and the trade-offs between security and functionality. Common themes include troubleshooting relay abuse, setting up SMTP authentication, and balancing open relay risks with the need to send emails from multiple domains.
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    Questions about exploited SMTP relay

    Hello, I'm using SmarterMail on Windows Server 2008. I changed the SMTP relay from "Nobody" to "Only local users" and in last 2 days I had a large number of outgoing spam messages sent from my server (close to 6.000). This has happened in the past, and setting SMTP relay back to "Nobody" has...
    • batric
    • Thread
    • authentication configuration domain email email configuration email relay email sending learning resources relay configuration relays security server management server security smartermail smtp smtp auth spam windows server
    • Replies: 4
    • Forum: Windows Server Forums
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