I use Thunderbird as my mail client. Starting today I've been getting a popup saying that an outgoing connection to www.ojrq.net is being blocked when I open various emails. They are emails from legitimate companies such as Marriott, Alaska Airlines, and others. I did a scan with Malwarebytes and with Adwcleaner and nothing is found.
Any idea what might be causing this? Is www.ojrq.net really a site that needs to be blocked and why did it just start getting blocked today?