What Is Causing This Error?
‘Error 515: Destination mailbox address invalid’ typically arises when an email is sent to an invalid or non-existent email address. This can occur due to an incorrectly spelled email address, incorrect domain names, deactivation or deletion of the recipient’s email account, or issues with the recipient’s mail server configuration that prevent it from recognizing valid email addresses.
Resolving the Error – Solution
To resolve Error 515, start by double-checking the recipient’s email address for any mistyped characters or other inaccuracies. If the email address appears correct, it’s possible the account may have been deactivated or deleted, or the domain might no longer be active. If the issue persists, consider contacting the intended recipient through alternative communication means to confirm their current email address or to acquire a new one. Additionally, reviewing the mail server’s documentation or reaching out to its support team can provide specific insights and troubleshooting steps for this error.
That’s it! Now you know how to fix Error 515.
If you’d like to learn how to troubleshoot other common errors, check out the following tutorials: