Public bug reported:

The Mailman.Mailbox.Mailbox.AppendMessage method has an invalid seek to position the file to the end of the mailbox. It contains

. # Seek to the last char of the mailbox . self.fp.seek(1, 2)

This actually should be self.fp.seek(0, 2). There is no actual ill effect in Mailman itself from this bug as Mailman always opens mailbox files to be written to in 'a+' mode and seeks before writes are ignored for files opened in append mode, but if someone creates a process which opens a file in 'w+' mode and then uses the Mailman.Mailbox.Mailbox.AppendMessage method to add messages to it, each added message's UnixFrom is preceded by a null byte.

** Affects: mailman Importance: Low Assignee: Mark Sapiro (msapiro) Status: Confirmed