Solution: You have new mail in/var/spool/mail/root
Run:
Echo "unset MAILCHECK">/etc/profile
Source/etc/profile
View
Ls-lth/var/spool/mail/
Clear:
Cat/dev/null>/var/spool/mail/root
The following is my process
[Root @ dir ~] # Echo "unset MAILCHECK">/etc/profile
You have new mail in/var/spool/mail/root
[Root @ dir ~] # Source/etc/profile
[Root @ dir ~] # Ls-lth/var/spool/mail/
Total usage 29 M
-Rw -------. 1 root mail 29 M December 1 09:14 root
-Rw ----. 1 nagios mail 3.5 K October 9 01:07 nagios
-Rw ----. 1 zabbix mail 0 July 16 02:13 zabbix
-Rw ----. 1 caimz mail 0 July 6 20:36 caimz
-Rw ----. 1 wuhao mail 0 July 6 19:35 wuhao
-Rw ----. 1 wuhao mail 0 July 6 19:34 wh
-Rw ----. 1 php-fpm mail 0 June 25 01:24 php-fpm
-Rw ----. 1 virftp mail 0 June 17 19:06 virftp
-Rw ----. 1 liukm mail 0 June 8 18:03 liukm
-Rwxrwxrwx. 1 root 208 2015 test_myfuncs
-Rwxrwxrwx. 1 root 80 August May 29 2015 myfuncs
-Rw ----. 1 linuxsir mail 0 April 29 2015 linuxsir
-Rw ----. 1 sir04 mail 0 April 29 2015 sir04
-Rw ----. 1 sir03 mail 0 April 29 2015 sir03
-Rw ----. 1 sir02 mail 0 April 29 2015 sir02
-Rw ----. 1 sir01 mail 0 April 29 2015 sir01
-Rw ----. 1 user1 mail 0 April 2 2015 user1
-Rw ----. 1 chenhz mail 0 March 31 2015 chenhz
-Rw ----. 1 hzp mail 0 March 31 2015 hzp
-Rw ----. 1 www mail 0 March 31 2015 www
-Rw ----. 1 506 mail 0 March 26 2015 cy
-Rw ----. 1 lrq mail 0 March 26 2015 lrq
-Rw ----. 1 smb2 mail 0 March 26 2015 smb2
-Rw ----. 1 chenle mail 0 August March 26 2015 chenle
-Rw ----. 1 leco mail 0 March 24 2015 leco
-Rw ----. 1 rpc mail 0 March 24 2015 rpc
[Root @ dir ~] # Cat/dev/null>/var/spool/mail/root
[Root @ dir ~] #
Connection closed.
Disconnected from remote host (PC_Company) at 09:15:17.
Type 'help' to learn how to use Xshell prompt.
[C: \ ~] $
Connecting to 192.168.0.186: 22...
Connection established.
To escape to local shell, press 'ctrl + Alt +] '.
Last login: Tue Dec 1 09:14:33 2015 from 192.168.0.138
[Root @ dir ~] # Ls