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First of all, install postfix and remove sendmail: <br>
Openssl and openssl-perl are needed to generate certificates and create SSL connections to GMail<br>
Openssl should be installed already, but to be sure: <br>
A Certificate Authority is needed to create the necessary certificates. You can skip the next paragraph if you already have one:<br>
*You will be prompted for the file name, hit enter to create a new CA.
*For the Common Name, type “CA” (without quotes).
*Take defaults for everything else and when prompted enter the passphrase from above.<br>
You will be prompted for country etc. like when creating the CA. Enter the same values. <br>
As Common Name, now enter the name of your server, FQDN or not, your choice. <br>
You will need to enter your passphrase again at this point.<br>
When asked if you want to sign the key, answer yes, same when asked if to commit it.
You do not need to change anything else in it, as the last setting for any option is the one that is saved.
#### GMail SSL SMTP Relay relayhost = [smtp.gmail.com]:587
#auth smtp_sasl_auth_enable=yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd #tls smtp_use_tls = yes smtp_sasl_security_options = noanonymous smtp_sasl_tls_security_options = noanonymous smtp_tls_note_starttls_offer = yes tls_random_source = dev:/dev/urandom smtp_tls_scert_verifydepth = 5 smtp_tls_key_file=/etc/pki/tls/gmail_relay/server.key smtp_tls_cert_file=/etc/pki/tls/gmail_relay/server.pem smtpd_tls_ask_ccert = yes smtpd_tls_req_ccert =no smtp_tls_enforce_peername = no<br>
Create /etc/postfix/sasl_passwd file with your GMail login credentials that looks like below:
gmail-smtp.l.google.com user@gmail.com:password<br> smtp.gmail.com user@gmail.com:password<br>
Obviously, you need to change ‘’user’’ to your username and ‘’password’’ to your gmail password. <br>
Create the password database: <br>
Protect the files with your GMail login data:
