Postfix EnablerPostfix Enabler 
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The latest version of Postfix Enabler is 1.2 on Mac Informer. It is a perfect match for E-mail in the Communication category.
Postfix Enabler allows Mac users to easily configure a fully functional, buzzword-compliant mail server in under a minute. Whether you need to set up SMTP, POP3, or IMAP services, this tool makes it simple. You can choose to enable SSL support or set up SSL test certificates to test your connections. It even supports SASL Authentication for ISPs requiring authentication before allowing an SMTP connection, giving you complete flexibility for both sending and receiving emails securely.
Additionally, Postfix Enabler allows for remote email access, enabling a roving SMTP server for users on the go. If you're using a PowerBook, you can send mail from anywhere with an Internet connection. Simply set up SMTP-AUTH to authorize remote users and enjoy seamless email communication at all times.
Compatible with OS X Tiger and Panther, Postfix Enabler is a powerful solution for managing your mail server. Note that it does not support OS X Server.