Ticket escalating without any SLA or queue escalations

[lfarrow]

I have a ticket in my production instance that is sending out escalation notices, however I do not have any escalations set in the queue (0 for all escalations), and we do not utilize any SLAs. OTRS version is 3.0.10, which I know is out of date. The ticket history isn't showing any history of escalation, and I'm not able to figure out how this is getting an escalation associated with it.

Any ideas?

[schulmann]

You should examine the smtp headers.
Perhaps you have got the mails from a test system.