I have been using Virtualmin for a while now and we’re starting to see lots of usage for outgoing mail and I haven’t been able to find a way to monitor this or see any logs around mail other than checking out /var/log/mail.log on the server itself (server is Debian).
Is there anywhere I am missing that this could be done, or is there a plugin that I could use?
Ideally I would be looking for a graph (per account) that I could see volume and trends of outgoing emails being sent.
Any help would be greatly appreciated.
I guess alternatively, is there a third party tool I could use on the server to get this data separately from mail.log?