[CentOS] send mail problem on ORACLE/LInux

mcclnx mcc wrote:
> I did NOT see anything wrong on /var/log/maillog.
>

Can you telnet to localhost 25 and send a mail that way ?

e.g.
[aphro at portal:~]$ telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.localdomain.
Escape character is '^]'.
220 portal.aphroland.org ESMTP Postfix (Debian/GNU)
helo portal.aphroland.org
250 portal.aphroland.org
mail from: centos at linuxpowered.net
250 2.1.0 Ok
rcpt to: centos at linuxpowered.net
250 2.1.5 Ok
data
354 End data with <CR><LF>.<CR><LF>
Subject: hello there
testing email