Normally SMTP mail configuration is accessible only by the local host 127.0.0.1
By edit the SMTP configuration file /etc/mal/sendmail.mc we can change it as mail server access in local host and remote host.Start service using chkconfig Linux command
Change the configuration file.Restart the service and Check the status
[root@rhel5 ~]# chkconfig sendmail on
Edit the file /etc/mail/sendmail.mc
Go to the line 116
DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
Disable this line by through adding dnl # command to the pervious of these lines.
dnl #DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
[root@rhel5 ~]# service sendmail restart
Shutting down sm-client: [ OK ]
Shutting down sendmail: [ OK ]
Starting sendmail: [ OK ]
Starting sm-client: [ OK ]
Check the status by using netstat Linux command using –tulpn option
[root@rhel5 ~]# netstat -tulpn | grep sendmail*
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 4772/send
tcp is enable state at 0.0.0.0 It means send mail should accessible from remote login
By edit the SMTP configuration file /etc/mal/sendmail.mc we can change it as mail server access in local host and remote host.Start service using chkconfig Linux command
Change the configuration file.Restart the service and Check the status
[root@rhel5 ~]# chkconfig sendmail on
Edit the file /etc/mail/sendmail.mc
Go to the line 116
DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
Disable this line by through adding dnl # command to the pervious of these lines.
dnl #DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
[root@rhel5 ~]# service sendmail restart
Shutting down sm-client: [ OK ]
Shutting down sendmail: [ OK ]
Starting sendmail: [ OK ]
Starting sm-client: [ OK ]
Check the status by using netstat Linux command using –tulpn option
[root@rhel5 ~]# netstat -tulpn | grep sendmail*
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 4772/send
tcp is enable state at 0.0.0.0 It means send mail should accessible from remote login
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