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How are Microsoft Sender Reputation Data (SRD) rates used in Domain Certification compliance?

Microsoft Sender Reputation Data (SRD) enforcement for Certified domains and individual Certified IPs is separate from one another. For example, if you send from multiple IPs, then it is possible that your domain can be suspended for SRD non-compliance while your individual IPs remain compliant within the IP program.

However, it is important to note that any issue you may encounter with SRD should be taken seriously, and mitigation work is recommended.

The SRD rate for Certified domains is calculated using the following formula across all of your IPs:

  • Microsoft SRD Rate = sum of junk votes / sum of total votes

All domains in your program will be suspended if the SRD rate is 50% or higher AND you have at least 5 junk votes.

Return Path Certification: Domains
Sender Reputation Data (SRD) Compliance Thresholds
Microsoft SRD Rate Threshold
(30 Day Average)

50% with 5 Junk Votes

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