The handling of Preludes in the headers stem from the MBox format. According to the IMAP spec, the literal submitted to APPEND should be a valid RFC822 formatted message.
The handling of the prelude was also causing issues where an MBox formatted entry would slip through and then cause issues later.
The handling of Preludes in the headers stem from the MBox format. According to the IMAP spec, the literal submitted to APPEND should be a valid RFC822 formatted message.
The handling of the prelude was also causing issues where an MBox formatted entry would slip through and then cause issues later.