CommandFailedException "some FETCH responses could not be transmitted due to errors"

I'm using Javamail 1.5.6 to listen for incoming IMAP messages from a specific mail account. Some messages, coming always from the same sender, show errors when I try to read their size, please see the following log:

"11:48:28.876 E [JavaMail-EventQueue] it.cbt.mail.impl.IMAPFolderSynchronizer:65 - Error notifying message addition
"javax.mail.MessagingException: A588 NO some FETCH responses could not be transmitted due to errors
        at com.sun.mail.imap.IMAPMessage.loadEnvelope(IMAPMessage.java:1450)
        at com.sun.mail.imap.IMAPMessage.getSize(IMAPMessage.java:491)
        at it.cbt.mail.impl.IMAPFolderSynchronizer.messagesAdded(IMAPFolderSynchronizer.java:54)
        at javax.mail.event.MessageCountEvent.dispatch(MessageCountEvent.java:153)
        at javax.mail.EventQueue.run(EventQueue.java:168)
        at java.lang.Thread.run(Thread.java:748)
Caused by: com.sun.mail.iap.CommandFailedException: A588 NO some FETCH responses could not be transmitted due to errors
        at com.sun.mail.iap.Protocol.handleResult(Protocol.java:396)
        at com.sun.mail.imap.IMAPMessage.loadEnvelope(IMAPMessage.java:1445)
        ... 5 common frames omitted
11:48:28.876 D [JavaMail-EventQueue] my.package.IncomingMailServiceImpl:182 - Notice "cannot map message section for parsing"

I thought it was a mail server error, nevertheless if I log-in into mail web-client, I can correctly see those messages which fail when get with Javamail, so I'm confused about the real issue's cause. Have you ever got this problem?

Thanks in advance, bye

Solution

It's almost certainly a bug in the mail server. The JavaMail FAQ tells you how to work around IMAP server bugs.