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Do you need OAuth2 to use postfix?
Google switched to OAuth2 authentication and deprecated other authentication methods. This is why I tried to use the new OAuth2 authentication and not the old user/password one. As far as I understand, postfix does not do any SASL authentication itself but relies on other applications like Cyrus SASL.
How to use postfix as a relay server?
If you want to relay via your own mail server, an alternative would be to update your mynetworks setting on the target mail server to accept e-mail without authentication (i.e., authorize by IP address). Here, though, we’ll use username/password authentication. First, edit /etc/postfix/main.cf.
When does Gmail require OAuth2 for email relay?
This becomes a big deal in February 2021 when GMail will begin requiring OAuth2 for email relay. Unless you really have to relay email via GMail, consider signing up for Amazon SES, SendInBlue, or other SMTP email relay service which permits ID/password authentication.
How to install postfix for SASL authentication on RHEL?
Install postfix and other dependency packages for SASL authentication On RHEL system you must have an active subscription to RHN or you can configure a local offline repository using which “yum” package manager can install the provided rpm and it’s dependencies. Here I will share the basic and minimal recommended configuration for postfix.
What do you need to know about authentication in RESTful API?
Authentication is stating that you are who are you are and Authorization is asking if you have access to a certain resource. When working with REST APIs you must remember to consider security from the start. RESTful API often use GET (read), POST (create), PUT (replace/update) and DELETE (to delete a record).
How to enable postfix authentication on Ubuntu 12.04?
In this tutorial we are going to configure a mail server using Postfix, Dovecot, MySQL, and SpamAssassin on Ubuntu 12.04. Append these lines in /etc/postfix/main.cf and restart postfix service. The email messages i’ll be encrypted as TLS and verified by your hostname.
Is there a plugin for Cyrus SASL for postfix?
As far as I understand, postfix does not do any SASL authentication itself but relies on other applications like Cyrus SASL. And there exists a plugin for Cyrus doing OAuth2 authentication: