Postfix and Dovecot command cheat sheet for RHEL, AlmaLinux, Rocky Linux, Oracle Linux and CentOS Stream: postconf, queue management, lmdb tables, logs, TLS testing, doveadm, firewalld and SELinux.
Step-by-step Postfix and Dovecot mail server setup for RHEL 9/10, AlmaLinux, Rocky Linux, Oracle Linux and CentOS Stream: TLS, SASL submission on 587, IMAPS, LMTP delivery, verification and troubleshooting.
Create Message Of The Day Startup Banner CentOS To create a custom start-up message that displays after login, do the following: Open a terminal session, and elevate privileges to root…
Today’s roundup: SpaceX, Tesla news from the past day, with links to full write-ups.
Ahead of Tesla’s October 21 Q3 call, retail shareholders’ top-voted questions focus on Cybercab expansion, unsupervised FSD, Optimus costs and Hardware 3 upgrades.
ARK Invest’s updated open-source Tesla model puts the expected 2031 share price at about $4,400, with robotaxis about 80% of enterprise value and Optimus a growing slice.
SpaceX posts Q3 2026 results after the bell on October 20. Analysts expect revenue near $12.9 billion and a first profit since the IPO, while a large lockup expiry weighs on the stock.
After a one-day weather delay, Falcon 9 launched Bandwagon-5 on October 20 with 31 customer payloads and SpaceX’s second Starfall reentry capsule, and booster B1085 landed on its 19th flight.
Configure an AlmaLinux 10 machine as an MIT Kerberos client: krb5.conf with primary and replica KDCs, a host keytab, SSSD Kerberos password logins and passwordless SSH with GSSAPI.
Configure Citrix ICA Client CentOS 6 Configure Citrix ICA Client CentOS 6 This one is beautiful. Nothing like removing Windows from the entire process of working from home, or just…
