[exim] Doubts wrt maillog

Hi,

I see the below given messaged in exim main_log:

---------------
2013-07-11 22:59:51 SMTP connection identification H=localhost A=127.0.0.1
P=50967 U=root ID= S=root B=identify_local_connection
2013-07-11 22:59:51 H=localhost [127.0.0.1]:50967 Warning: Sender rate
8855.9 / 1h
2013-07-11 22:59:51 1UxPq3-000ho1-AX <= abc@???
<capi@???>H=localhost [127.0.0.1]:51040 P=esmtp S=2488 T="YOU ARE
NEEDED AS A
REPRESENTATIVE!!!" for megan888@???
---------------

The email address abc@??? <capi@???> isnt present in the server.
I am unable to find how the mails are generated :( . Please assist.

A large number of such mails are getting generated, and thus large number
of connections to 127.0.0.1:25 from 127.0.0.1:XXXX, thereby increasing the
load.

Thanks in advance.

--
Regards,
Soumya