Security checks / Check reference / Asset management

Storage Exchange Storage Quota Used

Info Severity Microsoft 365 security check in the Asset management domain.

Exchange mailbox storage usage proportion (used vs send quota) per user Large mailboxes slow eDiscovery and can hide malicious inbox rules or forwarding Siemserva runs this check automatically across your tenant and maps every finding to the compliance frameworks below.

Info SeverityAsset managementSCuBA MS.SHAREPOINT.1.1v1

Check summary

Severity
Info
Domain
Asset management
Rank in domain
1
Frameworks
5

What this check verifies

Exchange mailbox storage usage proportion (used vs send quota) per user

Why it matters

Large mailboxes slow eDiscovery and can hide malicious inbox rules or forwarding

How to fix it

Plan mailbox capacity and implement retention policies

Siemserva flags every tenant where this check fails and, with Senserva Trustworthy AI remediation, can propose a validated fix you approve before it applies.

Ask your own AI about this check

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

Compliance framework mappings

Findings from this check serve as evidence for:

SCuBAMCSBNISTSOC2CISSCuBA MS.SHAREPOINT.1.1v1SCuBA MS.SHAREPOINT.1.2v1SCuBA MS.SHAREPOINT.1.3v1SCuBA MS.SHAREPOINT.2.1v1SCuBA MS.SHAREPOINT.2.2v1SCuBA MS.SHAREPOINT.3.1v1SCuBA MS.SHAREPOINT.3.2v1SCuBA MS.SHAREPOINT.3.3v1MCSB DP-1

References

learn.microsoft.com: /security/benchmark/azure/mcsb-data-protection...www.cisa.gov: /sites/default/files/2023-12/SharePoint%20and%20On...

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Common questions

What does the Storage Exchange Storage Quota Used check verify?

Exchange mailbox storage usage proportion (used vs send quota) per user It is a Info Severity check in the Asset management domain, one of the 650+ checks Siemserva runs across Microsoft 365, Intune, Defender, and Entra ID.

How do I fix a Storage Exchange Storage Quota Used finding?

Plan mailbox capacity and implement retention policies Siemserva ranks the finding by Severity and, with Senserva Trustworthy AI, can propose a validated, approve-before-apply configuration fix.

Which compliance frameworks does this check evidence?

Findings from this check map to SCuBA, MCSB, NIST, SOC2, CIS, including SCuBA policy MS.SHAREPOINT.1.1v1, MS.SHAREPOINT.1.2v1, MS.SHAREPOINT.1.3v1, MS.SHAREPOINT.2.1v1, MS.SHAREPOINT.2.2v1, MS.SHAREPOINT.3.1v1, MS.SHAREPOINT.3.2v1, MS.SHAREPOINT.3.3v1, and MCSB control DP-1. That mapping is what turns a scan finding into audit evidence.

Can I ask my own AI about this check?

Yes. This page includes a free copy-paste AI prompt carrying the check's facts: what it verifies, the risk, the remediation, and the framework mappings. Paste it into Claude, ChatGPT, or Copilot; cite-worthy detail without giving an AI access to your tenant.

All 672 checks with severities and mappings: the Microsoft 365 security checks catalog.

Sponsored by Senserva

Siemserva by Senserva runs this check, Storage Exchange Storage Quota Used for example, across your own tenant: which tenants pass, which fail, ranked by Severity with the evidence attached.

  • 650+ Microsoft 365, Intune, Defender, and Entra ID checks in one scan
  • Findings mapped to SCuBA, CIS, NIST, HIPAA, SOC 2, and MCSB for audit-ready evidence
  • Senserva Trustworthy AI driven configuration remediation: validated, approve-before-apply fixes
  • Optional AI Enhanced Reporting: plain-language summaries and recommended next steps written into your reports
  • Multi-tenant and MSP practices, with bulk tenant audits and client-ready reporting
Compliance Status Report
Storage Exchange Storage Quota Used across 2 tenants, ranked by Severity
23
FAILING
87
PASSING
41
OTHER FINDINGS
CHECKSEVERITYSTATUSFINDINGS
Storage Exchange Storage Quota UsedInfoFAILING23
MFA for all usersCritical-11
Legacy authentication blockedHigh-6
Estimated report, sample data for illustration
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Reference: the compliance and audit guide, and the full checks catalog.
Data notice: check definitions describe what Siemserva verifies and are provided as is, for informational purposes only, without warranty of any kind. Framework mappings are informational and do not constitute compliance advice; confirm requirements with your assessor. All use of this data is subject to the Senserva EULA.