APR suddenly firing three emails at the same time

[Adam (Adam Szymanski)]

We have a basic routing setup for invoices… if routing on, send a copy of the invoice to the customer. This feature has worked great for quite some time, however, last week the process suddenly started sending 3 emails instead of 1… same email, to the same person, with the same attachment, with the same timestamp.

Nothing in the routing has changed. The employee is following the same process (open invoice, go to print, make sure routing is checked, print preview button).

We thought a reboot of their system fixed it, and a clear cache, but then another employee started noticing the same issue.

ANY suggestions on how to troubleshoot this?

[tsmith (Tyler Smith)]

The following post has some similar symptoms. Perhaps it’s the same issue.

APR Sending Multiple Copies of an Email

So finally, we have found out the cause and solution. I will try to keep it brief: Confirmed by Epicor Support, Epicor 10 is hard coded to retry an email operation after 30 seconds if there isn’t an smtp acknowledgement provided by the smtp server within that timeframe. The default timeout for Exchange servers to provide an acknowledgement (what’s called the MaxAcknowledgementDelay) when it’s still processing a request is 30 seconds. What this means is that if an email does not fail or succeed…

[Adam (Adam Szymanski)]

This fixed our issue. We reduced the MaxAcknowledgementDelay to zero and now only single emails area again sending.