Recently, I began to receive similar frozen messages. I have a Debian GNU / Linux server 8.10 Exim version 4.84_2. Everyone reports that this version is not confirmed by attacks, however I get the following messages:
I do not have in the system of suspicious processes and running cron jobs. What do you recommend to do in this case? I will be very grateful for valuable advice.
Can I upgrade exim to version 4.92 and how to do it on debian 8?