We are using the 5.10.15 version of AcyMailing and have been for years. We set up this month's newsletter and sent a test out to our test accounts and it worked fine. Going back in a few days later, we noticed that there were hundreds of blank new newsletters.
Examining it, we see that these are being automatically created at the rate of several a minute.
We changed our cron job frequencies to weekly but that had on effect on the behavior.
We created a backup and moved it to our test server and the proliferation of these bogus new newsletters stopped.
We of course have a newsletter to send out in 3 days so we are looking for any suggestions or ideas of what to do to resolve the problem.
Thanks in advance for your help.