exim abandoned: unknown, malformed, or incomplete option -Am?

Hello,

I have server with the WHM 11.11.0 cPanel 11.15.0-R17665
CENTOS Enterprise 4.5 i686 on virtuozzo - WHM X v3.1.0

While trying to send mail I am getting this error

There was an error sending your message: Failed to connect to localhost:25 [SMTP: Invalid response code received from server (code: -1, response: abandoned: unknown, malformed, or incomplete option -Am)]

On shell it is showing the following error for SMTP :-

telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
exim abandoned: unknown, malformed, or incomplete option -Am
Connection closed by foreign host.

I have tried /scripts/eximup --force and /scripts/upcp --force but exim failes while reinstalling it through eximup scripts

But it shows up and running in the server while checking through shell

service exim status
exim (pid 30559) is running...

netstat -an | grep 25
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN


Please help to sort out this.


Thanks