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  1. Postbox Support
  2. Troubleshooting
  3. Error Codes / Error Messages

Error Codes / Error Messages

  • Error: An error occurred during the update...
  • Error: There are non-ASCII characters in the local part of the recipient address
  • Error: Postbox can’t be opened because Apple cannot check it for malicious software.
  • Error code: ssl_error_no_cypher_overlap
  • Error: Cookies are disabled
  • "The folder Inbox is full, and can't hold any more messages" error
  • How to fix the Update Failed error message when updating Postbox
  • Error code: ssl_error_ssl_disabled
  • RC4 Cipher
  • Error code: sec_error_untrusted_issuer
  • Error: "Unable to open summary file..."
  • Security library failure (sec_error_library_failure)
  • Error Message: www.postbox-inc could not be found
  • Security Certificate Errors
  • Error: Incoming server already exists
  • Error on macOS: Your Postbox profile cannot be loaded. It may be missing or inaccessible.
  • Error Message: This folder is being processed
  • Download Error when Opening Attachments
  • Yahoo Error: "RETR command did not succeed"
  • Error message: A copy of Postbox is already open
  • Too Many Connections to the IMAP Server
  • Unable to start Postbox after an update, "license file for this version could not be found."
  • Error code: ssl_error_rx_malformed_server_key_exch
  • 5.7.1 END-OF-MESSAGE: End-of-data rejected Error
  • Error code: ssl_error_internal_error_alert
  • Send Message Error
  • Invalid Security Certificate Error when using Kaspersky, AVAST, or other Security Apps
  • SSL received a record that exceeded the maximum permissible length
 
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