Hi all. Thanks in advance for any advice...
I set up an account on my server to act as a catch-all account. Over the last 3 days, this account has been bombarded with over 2000 bounce-backs each day. They are all coming from random domains at a rate of about 1 every 8 minutes. When I checked my zimbra daily mail report, it says the most active sender on my server is postmaster, with 2113 sends yesterday!
Do I have some sort of virus? Or have I left my server open as a relay allowing this activity?
I'm not sure which log files or config settings to share to help diagnose this. Any help would be greatly appreciated.
Thanks as always!