Our Hardware team has a Project in JIRA. Up until our recent upgrade to Jira 7.13, they could use the "mention" function in Jira to reference a user by name in an issue, and that user would get an email notification.
We couldn't figure out why there were literally dozens of email errors in the mail queue, all having similar "<username> mentioned you on <issue number> (Jira)" Subjects.
After lots of dead ends, we went to Administration/Projects/Project Settings and for the Notifications "Email" setting, we removed all spaces and replaced with underscores. For example "Jira_HW_Project_Name" <do_not_reply@ourcompany.com>.
I can't find anything in the Atlassian articles that mentions this as a requirement for enabling the correct function of the "mention" feature. Does anyone in the Community have an idea why the Email setting for a Jira Project (in Administration/Projects) can't have any spaces in it?
Thanks for any ideas. Although this seems to be working now, I have an odd feeling that we accidentally figured out a workaround for a problem that may have a better solution.