This guide shows you how to configure your AirWave server to send emails through gmail with authentication. I found some useful but slightly outdated guides on airheads, so I figured I'd share my working configs with everyone.
Tested on AirWave v220.127.116.11
1. SSH into your airwave server as root
2. Add SASL libraries for Postfix
yum install cyrus-sasl-plain
3. Create a temporary password file
echo "smtp.gmail.com your_gmail_username:your_gmail_password" > /etc/postfix/sasl_passwd
4. Hash the password file so that it is not stored in clear text. This command will create a file named sasl_passwd.db in the /etc/postfix/ directory.
5. Add the following to the bottom of /etc/postfix/main.cf. This guide assumes that your root certificates installed from openssl are located in /etc/pki/tls/certs/ca-bundle.crt.
Don't have nano installed? Run:
yum install nano
At the bottom of the file enter this text. If you already have a 'relayhost' line you can delete that.
smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = noanonymous # Secure channel TLS with exact nexthop name match. smtp_tls_security_level = secure smtp_tls_mandatory_protocols = TLSv1 smtp_tls_mandatory_ciphers = high smtp_tls_secure_cert_match = nexthop smtp_tls_CAfile = /etc/pki/tls/certs/ca-bundle.crt relayhost = smtp.gmail.com:587
Run CTRL + W and find the line 'inet_protocols'. Change it:
From: inet_protocols = all
To: inet_protocols = ipv4
Run CTRL + X to save your file
6. Restart postfix
service postfix restart
7. Send a test email
Enter a subject, press enter, type something in the body (blank space), hit enter, type a period (.), and press enter. You should receive the test email. If this worked you can remove the un-hashed password file:
8. Send another test email to make sure it continues to work. Now go to menu AMPSetup > General > Additional AMP Services, and set 'Use Embedded Mail Server' to 'No'. If any issues arise, review the mail log file: