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 be installed from binary packages, but will be compiled by ourselves inside …
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 server is selected on-the-fly using DPI of protocol negotiation phase. After selection MPServer acts like a classic Reverse Proxy.In case …
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 emails (email spoofing). SPF allows the receiver to check that an email claiming to come from a specific domain comes from an …
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 sasl Create /etc/postfix/sasl/smtpd.conf file. pwcheck_method: saslauthd mech_list: PLAIN LOGIN Edit /etc/default/saslauthd file. START=yes DESC=”SASL Authentication Daemon” NAME=”saslauthd” MECHANISMS=”rimap” MECH_OPTIONS=”localhost” THREADS=5 OPTIONS=”-c -m /var/spool/postfix/var/run/saslauthd -r” …
DBMail over PostgreSQL + Postfix + SASL on Debian. Part 4. SASL. Read More »
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 file. mydomain = somewhere-in-the.space myhostname = mail.somewhere-in-the.space #disable /etc/aliases files lookup, all users are stored inside DB alias_maps = alias_database = mydestination = $mydomain, localhost, localhost.localdomain, …
DBMail over PostgreSQL + Postfix + SASL on Debian. Part 3. Postfix. Read More »