About mailnull and <> thing
1. In "Top Email Relayers" when I clicked user "cpanel" The list (Relay stats for cpanel) shows up. List has normal senders and additionaly there is a sender which is "<>" What is this mean? Who sent this and how can I prevent this?
2. In "View email statics" > "Top 50 local senders by message count" there is a line like below:
1052 6610KB mailnull
what is mailnull? and why it is so much emails?
Thank you,
Cem
