Error Codes / Error Messages
- 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: You've reached this page because we have detected that cookies are disabled in your browser
- "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 AVAST
- SSL received a record that exceeded the maximum permissible length