How to fix the intermittent issue when dealing with spring integration?

Question

We are using spring integration to poll the emails from outlook box.

Intermittently, we are seeing these exceptions.

Javax.mail.MessagingException: A4400 NO Server Unavailable javax.mail.MessagingException: A3 BAD User is authenticated but not connected.;

02:20:03.858 [task-scheduler-2] ERROR o.s.i.handler.LoggingHandler - org.springframework.messaging.MessagingException: failure occurred while polling for mail; nested exception is javax.mail.MessagingException: A4400 NO Server Unavailabl e. 15; nested exception is: com.sun.mail.iap.CommandFailedException: A4400 NO Server Unavailable. 15 at org.springframework.integration.mail.MailReceivingMessageSource.receive(MailReceivingMessageSource.java:131) at org.springframework.integration.endpoint.SourcePollingChannelAdapter.receiveMessage(SourcePollingChannelAdapter.java:224) at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:245) at org.springframework.integration.endpoint.AbstractPollingEndpoint.access$000(AbstractPollingEndpoint.java:58)

02:20:05.321 [task-scheduler-2] ERROR o.s.i.handler.LoggingHandler - org.springframework.messaging.MessagingException: failure occurred while polling for mail; nested exception is javax.mail.MessagingException: A3 BAD User is authenticated but not connected.; nested exception is: com.sun.mail.iap.BadCommandException: A3 BAD User is authenticated but not connected. : at org.springframework.integration.mail.MailReceivingMessageSource.receive(MailReceivingMessageSource.java:131)

Code snippet:

@Bean public IntegrationFlow imapIdleFlow() { return IntegrationFlows .from( Mail.imapInboundAdapter() .searchTermStrategy((f, l) ->) .javaMailProperties(p -> p .put("mail.debug", ) .put("mail.imap.connectionpoolsize", ))

I don't get the solution When I surfed the solution for this.

Amber Amber · Accepted Answer · 2021-10-29T14:46:38

You don't mention what server you're trying to connect to, but I ran into the "A3 BAD User is authenticated but not connected" error with imap and outlook.office365.com. I tried to set up the same account in Outlook to make sure it was working in general. Although I was able to add the account, when I actually tried to look at the inbox Outlook became unresponsive. So in my case, it was a problem with the account in general, not with how I was trying to connect. I was able to connect successfully with pop3 in case that's an option for you.

How to fix the intermittent issue when dealing with spring integration?

1 Answers