Postfix is a popular Mail Transfer Agent (MTA) used for sending and receiving emails. Sometimes, it may be necessary to configure Postfix to send emails via an external SMTP server, such as Gmail, Outlook, or a custom provider.
UUIDs (Universally Unique Identifiers) are alphanumeric strings used to uniquely identify entities in distributed systems, where the probability of collision—meaning two entities sharing the same identifier—must be extremely low.
In this article, we'll walk through how to create a CI/CD pipeline in GitLab to automatically publish changes to a production server whenever a push is made to a repository.