Question

Workflow Terminated with Service not available, closing transmission channel.

Workflow Version 9

Updated August 26, 2014

asked on May 16, 2014

I had several instances of the same workflow running when one of them received this error when it tried to send an email. Other workflows sent emails without incident to the same individual. The workflow terminated. What does this error mean?

Service not available, closing transmission channel

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replied on May 19, 2014

It sounds like the mail server was down or unresponsive.

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replied on July 11, 2014 • Show version history

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replied on August 26, 2014 • Show version history

I ran into this myself, if your email activity is within a Route activity you must add a separate activity called Email. Also if you have a Wait Condition you must add a separate Wait Condition after the email activity.

Now with your Email activity isolated you can drop it into a try catch to prevent your workflow from terminating just because the email server was down.

It would be a helpful to have a resume on error check box in the email tab.

Another thought, if the email is critical then you could invoke a workflow that attempt to send the email in a loop until the server comes back online.

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replied on August 26, 2014

The easier way would be to add a task error handler in the WF Admin Console for the error message. That would take care of all the email activities without having to rework workflow definitions.

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Workflow Terminated with Service not available, closing transmission channel.

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