Summary Question: Is there a way to tell what process is sending email on Red Hat?
I'm running a Red Hat 6.1 server. I have to mail issues I'd like to track.
Every day, at the same time, I get a blank email from root. I'd like to know what process is sending out that email.
Yes, I've checked cron and all the cron.d items, hourly, daily, weekly, monthly, etc. No dice. Ideally, I'd love something that, every time an email is sent, it would write to a log file what process generated that email (plus any info about that email, ideally).
I also see that a different email is generated and sent to a specific user daily, and I'd like to know what process generated that email, or at least what subject line that email had.
Thanks for your help.