hidden:Redirect local root mail to an external email address on HPSS servers

Redirect local root mail to an external email address on HPSS servers

1. Check if "postfix" bzw. sendmail mail server is already installed.

Notice: on RHEL Hosts postfix is already installed but on SL hosts its sendmail.

# service postfix status

# yum install postfix (On HPSS Server it was already installed and running)

2. Edit /etc/aliases

root: hpss-admin@lists.kit.edu

4. Run command on shell:

# newaliases

5. Restart mail server

# service postfix restart

6. Test

#echo "Hello from hpsscr01." | mail -s "hpsscr01 email-test-message" root

Relaying emails through another Server in postfix

As hpssmvr04 does not have a 141.* but an external Gridka IP 192.108.47.248 it can not send out emails via postfix to KIT mailserver. Therefore we have to use one of the other hpss movers acting as a relayhost for hpssmvr04.

NOTICE: these are extra steps to the configuration above "Redirect local root mail to an external email address on HPSS servers"

hpssmvr04 configuration

1. set relayhost hpssmvr03

# vi /etc/postfix/main.cf
 relayhost = 192.168.0.13

we use the internal 192.168.0.* IPs.

2. Restart postfix

# service postfix restart

hpssmvr03 configuration

1. use the KIT mailserver scc-mailin-cn-01.scc.kit.edu as the remote mailserver on which you have a valid email account with the username and password.

2. perform the following commands

# postconf -e 'relayhost = scc-mailin-cn-01.scc.kit.edu'
# postconf -e 'smtp_sasl_auth_enable = yes'
# postconf -e 'smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd'
# postconf -e 'smtp_sasl_security_options ='

3. Create a sasl_passwd file with a valid email account

# echo "<KIT remote mailserver>  <valid-email-account>:<password>" > /etc/postfix/sasl_passwd

e.g:

# echo "scc-mailin-cn-01.scc.kit.edu  ahmad.hammad@kit.edu:<password>" > /etc/postfix/sasl_passwd

4. Set file permissions

# Chown root:root /etc/postfix/sasl_passwd
# chmod 600 /etc/postfix/sasl_passwd

5. Create sasl_passwd.db file that postfix can read

# postmap /etc/postfix/sasl_passwd

6. Let also 192.168.0.13 listen on Port 25 (smpt)

# vi /etc/postfix/main.cf
inet_interfaces = 192.168.0.13,localhost 

7. Restart postfix

# service postfix restart

Test from hpssmv04

# echo "mailtest from hpssmvr04" | mail -s "mailtest from hpssmvr04" root