You can be surprised how much disk space Docker images can consume. In this article we will look at several ways of how to minimize your Docker image. We will build an image with Dante socks server as an example. Dante will not...
My new OpenSource project. A fast hybrid of Reverse Proxy and Deep Packet Inspection (DPI) written on C. Unlike classic Reverse Proxy, it can redirect client requests to multiple backend servers behind ONE port. The right backend...
DBMail over PostgreSQL + Postfix + SASL on Debian. Part 5. SPF. DKIM. DMARC. Clear headers. DNS PTR.
Part 1. Introduction. Part 2. DBMail. Part 3. Postfix. Part 4. SASL. Part 5. SPF. DKIM. DMARC. Clear headers. DNS PTR. SPF Sender Policy Framework is an email authentication method designed to detect forged sender addresses in...
Part 1. Introduction. Part 2. DBMail. Part 3. Postfix. Part 4. SASL. Part 5. SPF. DKIM. DMARC. Clear headers. DNS PTR. Install SASL. apt install libsasl2-modules sasl2-bin Add postfix user to sasl group. adduser postfix...
Part 1. Introduction. Part 2. DBMail. Part 3. Postfix. Part 4. SASL. Part 5. SPF. DKIM. DMARC. Clear headers. DNS PTR. Install postfix with No configuration option. apt install postfix Edit /etc/postfix/main.cf config...
