Table of contents
Procedure to enable mailx on Zmanda server for CentOS, RHEL, OEL, Fedora and, Suse Linux systems:
1. 1. Install mailx package
#yum install mailx
2. Create a soft link to mailx from mail.
#ln -s /bin/mailx /bin/mail
3. Update the /etc/mail.rc configuration as below:
#append the following line in mail.rc
# set smtp=smtp://smtp.server.tld:port_number
set smtp=smtp.office365.com:25
# tell mailx that it needs to authorise
set smtp-auth=login
set smtp-use-starttls
# set the user for SMTP
# set [email protected]
set [email protected] (user account)
set [email protected] (user account)
# set the password for authorisation
set smtp-auth-password= “PASSWORD of user account”
set nss-config-dir=/etc/pki/nssdb/
set ssl-verify=ignore
4. To test the functionality:
#echo "Your message" | mail -s "Message Subject" [email protected]
Procedure to enable mailx on Zmanda server for Ubuntu & Debian Linux systems
1. apt-get install postfix mailutils
2. root@U16:~# vi /etc/postfix/main.cf
Append the following line
relayhost = [smtp.office365.com]:25
mynetworks = 127.0.0.0/8
inet_interfaces = loopback-only
smtp_use_tls = yes
smtp_always_send_ehlo = yes
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_sasl_tls_security_options = noanonymous
smtp_tls_security_level = encrypt
smtp_generic_maps = hash:/etc/postfix/generic
3. postfix SASL credentials configuration:
root@U16:~# vi /etc/postfix/sasl_passwd
Append following info.
[smtp.office365.com]:25 user@domainname:password
4. A Postfix lookup table must now be generated from the sasl_passwd text file by running the following command.
root@U16:~# postmap /etc/postfix/sasl_passwd
Now change permission for this file
root@U16:~# chown root:postfix /etc/postfix/sasl_passwd
root@U16:~# chmod 640 /etc/postfix/sasl_passwd
5. Next, we need to configure generic file in order to be able to send emails as a valid user (this is required for Office365).
root@U16:~# vi /etc/postfix/generic
Append following info.
@hostname [email protected]
Save and exit from file.
root@U16:~# chown root:root /etc/postfix/generic
root@U16:~# chmod 0600 /etc/postfix/generic
root@U16:~# postmap /etc/postfix/generic
6. Now Change alias root to your email address.
root@U16:~ vi /etc/aliases
Make the changes like below:
mailer-daemon: postmaster
postmaster: root
root: [email protected]
7. Run command newaliases to take effect.
root@U16:~ newaliases
root@U16:~# systemctl restart postfix.service
8. send a test email using the command below:
echo "This is the body of the email" | mailx -s "This is the subject(E-Mail from SMTP Relay) line" [email protected] -a "FROM: [email protected]"