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From "James Strachan" <>
Subject Re: ActiveMQ as email spool
Date Tue, 07 Oct 2008 13:39:11 GMT
2008/10/7 Markus Wolf <>:
> Hash: SHA1
> Hi,
> we try to setup an email spool using activemq.
> But we are struggeling with a guaranteed delivery. We have a queue for
> email send requests which is configured with a camel route and a
> try-catch block where the emails are put into another queue if an
> exception occured.
> The error queue should try a second attempt after 15 minutes, also as
> camel route. We tried to use a delayer for this, but in case of broker
> shutdown this messages are lost, because the message is already removed
> from the queue.
> Is there a way around this problem? We already tried to use
> CLIENT_ACKNOWLEDGE but it does not seem to work either.
> I've also read the thread james had with a developer from james. They
> tried the same, but I'm not sure if they succeed.

Use transacted mode - see the section on "Enabling Transacted Consumption"

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