根据JM开发人员Bill Shannon的说法，这是IMAP协议的局限性：
from Bill Shannon to Jonathan Hanson cc javamail_ww@oracle.comdate Wed, Aug 10, 2011 at 11:55 AMsubject Re: Bug with searching by ReceivedDateTermsmailed-by oracle.com important mainly because of your interaction with messages in the conversation.hide details 11:55 AM (16 minutes ago)The searching is being done by the IMAP server, and you're running into a limitation of the IMAP protocol.
