Failed to send messages after 3 tries

Hi,

I get the following error from my producer when sending a message:
Caused by: kafka.common.FailedToSendMessageException: Failed to send messages after 3 tries.
at kafka.producer.async.DefaultEventHandler.handle(DefaultEventHandler.scala:90)
at kafka.producer.Producer.send(Producer.scala:76)
at kafka.javaapi.producer.Producer.send(Producer.scala:42)
at com.servicemagic.kafka.producer.KafkaProducerTemplate.send(KafkaProducerTemplate.java:37)
... 31 more

The producer is running locally, the broker is on a different machine. I can telnet to the broker, so it isn't a network issue. Also, I have other producers that work fine using the same broker (but a different topic).

I've checked the various logs on the broker, but I don't see anything obvious in them. I'm not sure how to turn up the logging level, though, so perhaps there would be useful info if I could do that.

Can you give me some suggestions on how to troubleshoot this issue?

Thanks,

Mike