Message id not encircled with '' and ''. Bug in postfix logs?

Hello, in my mail.log I have lines where the message-id is not encircled with '' and ''. This has broke my parsing scripts. It seems that it only happens in the cleanup process. The messages-id hadn't domain portions. In about one month, I had seen two examples of this problem. I will

Re: Message id not encircled with '' and ''. Bug in postfix logs?

Thanks for the answer. Things are clearer now. message-id=468a9c3f8b21b9d8fe7af2181f4ddd99 This is a bug? Postfix logs the content of the message-id header. Some messages are more equal than others.