I have a workflow triggering on List item created only. There are multiple stages in the work flow and in each stage a single task is assigned to a group of people. Currently group is only having one user i.e. my own test user with a valid email address.
Workflow was running fine for first 5 runs but now it keeps sending multiple emails for each task multiple times and runs very slow. I have only single workflow in development server with 24GB RAM.
Enabling the Workflow log in Event viewer does not show any error or warnings. The only clue I see is WorkFlowManager Database table "DebugTrace" having multiple entries showing that WF is trying to send same email multiple times with failed attempts, but in reality emails are being delivered as well.
http://server/site/_vti_bin/client.svc/sp.utilities.utility.SendEmail Retry sending email in xx.xx.xx Status: HTTPRetrying
http://server/site/_vti_bin/client.svc/sp.utilities.utility.SendEmail Retry sending email in xx.xx.xx Status: HTTPFailed
I could not get the exact phrase as I don't have direct access to development machine at work.
Any help or guidance will be highly appreciated.