We have a request open and other Customers that are Request participants to on this ticket receive email notifications of activity on this ticket.
We have setup a single request with this particular customer as the Reporter of the issue and he does not receive any email notifications
We have checked all spam filtering and delivery logs for emails from Jira for this customer and it appears that the email is not being sent from Service desk to this particular customer.
How would we trouble shoot or what possible solutions might there be to this problem.