view relayers - cpanel user and smtp

WHM has the option: view relayers

Previously all sending through smtp appeared with the real user (user1, user2... ). Now all the sending through smtp (tcp 25) appear with the user "cpanel". This is correct? It affects to the bandwidth measurements of each user?

Code:

Top Email Relayers

Below are list of users who have relayed mail. They are listed in the order by
number of messages sent. You can click on the user/domain to view who 
they sent the messages to. 

User 	    	Domain 			Messages Sent 	Total Bytes Sent
cpanel 						84 		96448516
conxxx	        conxxxx.com 			7		11157
freshxxx	freshxxxx.com 	   		7		16954
elaxxx 		ela.xxx 			5	 	3773
root 						5 		50689
fiduxxxxc 	fiduxxxx.com 			3		8063
.
.
.
.

These 84 (more less) emails are greater to megabayte and are of a single user "elaxxx" but they are seen like sended by cpanel and not like sended by "elaxxx".

The other 5 messages of "elaxxx" are through webmail (phpsuexec).

This is correct? It affects to the bandwidth measurements of each user?

I have the impression that bandwidth used by mail is not being measured correctly.

This bandwidth is not reflected in the option: View Bandwidth Usage



WHM 10.8.0 cPanel 10.8.1-R21
RedHat 9 i686 - WHM X v3.1.0