SMTP Error 441

What causes this error and solutions

SuprSend provides APIs and components for you to create notification workflows that drive collaboration & actions from your users - ensuring higher product adoption.

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SMTP Error 441 is a permanent or "5xx" error code issued by a mail server to indicate the rejection of an email message. This rejection occurs when the recipient's mailbox or email account is either non-existent or no longer active. The error denotes that the recipient's email address is invalid, leading to the inability to deliver the message.

What's Causing This SMTP Error 441:

SMTP Error 441 may result from various issues:

  • Non-existent recipient: The email address provided in the "RCPT TO" command or the "To:" field of the email message does not correspond to a valid email account or mailbox.
  • Invalid recipient domain: The recipient's email domain (e.g., example.com) either does not exist or has been retired.
  • Deactivated or expired account: The recipient's email account may have been deactivated, suspended, or expired, rendering it unavailable for receiving emails.

How to Resolve SMTP Error 441 - Step-by-Step Solution:

To address SMTP Error 441, follow these steps:

  • Verify recipient's email address: Confirm the correct spelling and completeness of the recipient's email address, ensuring it corresponds to a valid email account or mailbox.
  • Check recipient domain: Ensure the recipient's email domain is operational, free of DNS (Domain Name System) issues, and is not retired or expired.
  • Contact the recipient: If encountering SMTP error 441 persistently when sending emails to a specific recipient, reach out through an alternative method (e.g., phone) to verify the status of their email account. They may need to resolve account-related issues.

SMTP Error 441 Examples:

  • "441 5.1.1 recipient@example.com: Recipient address does not exist."
  • "441 5.4.5 recipient@example.com: Domain name not found. Check recipient domain."
  • "441 5.7.0 recipient@example.com: Recipient's email account is deactivated. Email delivery cannot be completed."

Say Goodbye to all SMTP Errors in Development

SuprSend eliminates the need to build and configure email servers from scratch, ensuring you steer clear of SMTP errors. Here's how SuprSend would work for your application, building a reliable notification system.
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Written by:
Sanjeev Kumar
Engineering, SuprSend

Say Goodbye to all SMTP Errors in Development

SuprSend eliminates the need to build and configure email servers from scratch, ensuring you steer clear of SMTP errors. Here's how SuprSend would work for your application, building a reliable notification system.
Dashboard mockup

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