ImapMailReceiver NO STORE attempt on READ-ONLY folder (Failure) [THROTTLED];

Question

I spend day trying to find some explanation this exception. I try to configure ImapMailReceiver and ImapIdleChannelAdapter programmatic.

I didn\'t find any tutorials abo

Answer 1

You should call imapMailReceiver.afterPropertiesSet(), which switches this.folderOpenMode = Folder.READ_WRITE;. In your case it looks lie here:

imapMailReceiver.setJavaMailAuthenticator(new Authenticator() {
...
});

imapMailReceiver.afterPropertiesSet();

Actually almost all Spring Integration components should be configured as Spring beans and Container will take care about their initialization. The new 4.0 version provides enough options for JavaConfig: https://spring.io/blog/2014/04/30/spring-integration-4-0-released .

It's not clear to me why by default it is Folder.READ_ONLY and there is no setter on the matter.

Feel free to raise a JIRA issue: https://jira.spring.io/browse/INT

In which case I should use ImapIdleChannelAdapter and when just Session for getting store and connecting to mailbox.

Actually it depends on your Mail provider. Spring Integration provides two components: Pop3MailReceiver and ImapMailReceiver. Of course Imap is better, because it doesn't fetch messages to the local directory and supports Listener. Pop3 you should ping periodically.