Sending mail using qmail

Hi every body.
I have istalled qmail on Red Hat Linux on Local Machine.

I have sent mails.I noticed that these mails have been queued but not delivered.

Can you please help me? So I can send email locally.

I have used following cammands:

[root@localhost root]# qmailctl stat
/service/qmail-send: up (pid 8339) 1 seconds
/service/qmail-send/log: up (pid 15172) 2600 seconds
/service/qmail-smtpd: up (pid 8343) 1 seconds
/service/qmail-smtpd/log: up (pid 4071) 4786 seconds
/service/qmail-pop3d: up (pid 4073) 4786 seconds
/service/qmail-pop3d/log: up (pid 4075) 4786 seconds
messages in queue: 37
messages in queue but not yet preprocessed: 0

[root@localhost root]# mail -s TestSubject mosiur@localhost.mos
This a test mesage
Cc: root@localhost.mos

[root@localhost root]# qmailctl stat
/service/qmail-send: up (pid 10157) 0 seconds
/service/qmail-send/log: up (pid 15172) 2783 seconds
/service/qmail-smtpd: up (pid 10162) 0 seconds
/service/qmail-smtpd/log: up (pid 4071) 4969 seconds
/service/qmail-pop3d: up (pid 4073) 4969 seconds
/service/qmail-pop3d/log: up (pid 4075) 4969 seconds
messages in queue: 39
messages in queue but not yet preprocessed: 0