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Bounce Decoder: 550 5.7.13

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550 5.7.13 — User Account Disabled

The 550 5.7.13 SMTP error from Microsoft 365 means the recipient's account has been disabled. Learn what causes this and what to do.

🔴
Permanent Failure (Hard Bounce)
SMTP Code
550
Enhanced Code
5.7.13
Category
User Account Disabled
Frequency
Very Common

🔢 Enhanced Status Code Breakdown: 5.7.13

Component Value Meaning
Class 5 Permanent failure
Subject 7 Security or policy
Detail 13 User Account Disabled

Per RFC 3463 Enhanced Mail System Status Codes. Class (X) = severity, Subject (Y) = category, Detail (Z) = specific condition.

💬 What This Error Means

The recipient's account has been disabled and cannot receive email. This is a Microsoft 365-specific code returned when a user account is suspended, blocked, or otherwise deactivated in Azure Active Directory.

Common Causes

  • The recipient's Microsoft 365 account has been disabled by an administrator
  • The account was suspended due to suspicious activity
  • The user was offboarded but the mailbox not yet converted to shared
  • Azure AD licence removed, deactivating the account

How to Fix This

  • Contact the organisation's IT admin to check the account status
  • If the person left the company, ask for a forwarding address or contact the team directly
  • Remove this address from your mailing list

🏢 Provider-Specific Variations

Microsoft 365 / Outlook

This is a Microsoft 365-specific code. The user's account is blocked or disabled in Azure AD. Only the receiving organisation's IT admin can resolve this.

📖 Microsoft 365 / Outlook documentation →

📋 Real-World Example Messages

These are real bounce message formats you might receive. Paste yours into the Bounce Decoder for instant analysis. 

550 5.7.13 STOREDRV.Deliver.Exception:AccountDisabledException.MapiExceptionADUserDisabledAndHidden
550 5.7.133 The user account is blocked

🔗 Related Error Codes

550 5.2.1
Mailbox Disabled
550 5.7.14
Trust Relationship Required

📚 Official Documentation

↗ Microsoft 365 NDR 5.7.13
🔍

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