What is the most secure way to configure postfix to work with GoodCrypto?

1. Connect to your GoodCrypto private server website.
2. Sign in with the Administrator credentials.
3. Click on Mail.
4. Click on Postfix changes. This button only appears if you're logged in as the administrator. (If you don't see this button, then we recommend you download the latest ISO or run the script to update postfix.)
5. Enter the IP address for your GoodCrypto private server.
6. Copy the full contents from your postfix server's configuration files into the matching fields.
7. Click Generate config changes.
8. Review the changes and then copy the full contents from each field into the appropriate file on your mail server.
9. On your mail server, issue the command newaliases
10. Restart postfix.
11. Send a message to someone outside of your domain to verify that postfix is working.
12. Once you are comfortable, you can remove the "soft_bounce = yes" line from /etc/postfix/main.cf

We strongly recommend that you configure your SMTP/IMAP/POP servers and clients to default to TLS.