550 5.7.13: User Account Disabled

🔢 Enhanced Status Code Breakdown: 5.7.13

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

💬 What This Error Means

Read the words next to this code, because the digits alone are overloaded. The bounce most people meet names STOREDRV plus an AccountDisabledException, and means the recipient's mailbox has been switched off. But the IANA registry defines 5.7.13 as a *sender's* account being disabled after it authenticated, and Microsoft's own page for the code describes a public folder configured to reject external senders. The component name and the exception text tell you which of the three you are holding.

Common Causes

• STOREDRV plus an AccountDisabledException: the recipient mailbox was disabled by their IT administrator, or the user left and the licence was removed
• The recipient is a public folder configured to refuse mail from outside the organisation, which is what Microsoft documents this code for
• Your own authenticated sending account has been disabled by your provider, which is the meaning registered with IANA

How to Fix This

• Read the component name and exception text in the Diagnostic-Code line first: they, not the digits, name the actual condition
• If it names AccountDisabledException, the recipient's mailbox is off. Ask their IT team, or use a team address such as info@ instead
• If it names a public folder, only the receiving organisation's admin can allow external senders to it
• If your own outbound account stopped authenticating at the same time, check whether your provider disabled it

📚 Official 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