[BlueOnyx:17617] wrong Yum Update recipiant email

[Tom]

When I get my email regarding Yum Update, I get an error message to root. 
Yum is performing correctly and it really isn't a big deal that I find out 
this way. I would just like to fix it. 

The original message was received at Sun, 17 May 2015 06:00:12 -0400
from localhost [127.0.0.1]

   ----- The following addresses had permanent fatal errors -----
<admin at localhost.localhost>
    (reason: 550 Host unknown)

   ----- Transcript of session follows -----
550 5.1.2 <admin at localhost.localhost>... Host unknown (Name server: 
localhost.localhost: host not found)

Thanks in advance
Tom