mails not getting sent ...

Guys
I have not much idea on suse or any other linux flavour.

This is what i have:

cat /etc/issue
Welcome to SUSE LINUX Enterprise Server 9 (i586) - Kernel \r (\l).
ps -ef |grep postfix |grep -v grep
root     18620     1  0 Mar17 ?        00:00:00 /usr/lib/postfix/master
postfix  18622 18620  0 Mar17 ?        00:00:00 qmgr -l -t fifo -u
postfix  15521 18620  0 05:51 ?        00:00:00 pickup -l -t fifo -u

If i do 'mail' and open the latest entry ,i find

Enclosed is the mail delivery report that you requested.

                        The Postfix program
        --- Delivery report unavailable ---

if i run mailx manually :

mailx -v -s "HI" ak835@chrysler.com
EOT
Mail Delivery Status Report will be mailed to <my_id>.

I am not receiving any mails.

Any idea where should i start looking for solution ?

Regards
Abhi