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. Microsoft's own page for the code describes a public folder configured to reject external senders. The IANA registry defines 5.7.13 as an account disabled after it authenticated successfully, which points at the *sender's* side. Bounces naming STOREDRV and an AccountDisabledException also carry this code, and Microsoft does not document them. The component name and the exception text tell you which one you are holding.

Common Causes

• 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
• Reported but undocumented: a STOREDRV AccountDisabledException, whose name points at a disabled account on the receiving side

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, ask the recipient's IT team about the account, or reach them through a team address such as info@
• 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

🔗 Related Error Codes