Release Notes: This version enforces a policy of not delivering mail as the root user for security reasons.
Release Notes: There is a change in error handling to be a little less paranoid; a single error will no longer cause redelivery of all retrieved messages in the next session.
Release Notes: A change was made to allow external command delivery when running on Windows. A typo in the documentation was fixed.
Release Notes: An error handler was added for the situation where a retrieved message's header is corrupted by the presence of leading whitespace in the first header line.
Release Notes: Two diagnostic messages were improved.
Release Notes: This version features a portability workaround to compensate for incompatible changes in underlying Python standard library code.
Release Notes: The message logging timestamp has been converted to use GMT for consistency with other timestamping features in the program.
Release Notes: This release handles empty envelope sender addresses correctly.
Release Notes: This version features improved logging of message metadata.
Release Notes: Configuration error reporting was greatly improved.