We have some journals complaining of multiple unsolicited emails being sent. In one case, for example, a user was sent an email on March 3, 2018 with a request for review. The user declined on March 5. Both of these are noted in the email log page within OJS. For some reason, however, the user reports being sent six copies of an overdue reminder to review email on May 18, 2018. The OJS database email_log table shows the review request from March 3, but nothing else. Our mail servers show six emails being sent to the same user on May 18, within a 4-minute timespan. Unfortunately, I don’t have copies of those emails, so I have been unable to examine the headers to confirm that they are indeed overdue review reminders.
Do you have any ideas on how best to troubleshoot this situation?