Make a backup of the existing SSL key and certificate file Create the new SSL certificate for two years: Restart Dovecot and Postfix Check the start and end dates for the certificate:

I’ve been using Linux for a long time, but I was never entirely happy with the desktop environment options available. Until last year, Xfce was the closest to what I consider a good compromise between features and performance. Then I found i3, an amazing piece of software that changed my life. i3 is a tiling window manager. The goal of a window manager is to control the appearance and placement of windows in a windowing system....

1. Definition from Wikipedia: DevOps (a clipped compound of “development” and “operations”) is a set of software development practices[failed verification] that combines software development (Dev) with information technology operations (Ops) to shorten the systems development life cycle while delivering features, fixes, and updates frequently in close alignment with business objectives. 2. Definition from Webopedia DevOps (development and operations) is an enterprise software development phrase used to mean a type of agile relationship between development and IT operations....

This article explains the most commonly used Email protocols on the internet – POP3, IMAP, and SMTP SMTP 25, 2525 SMTP-SSL/TLS 587,465 IMAP 143 IMAP-SSL/TLS 993 POP3 110 POP3-SSL/TLS 995 587 vs. 465 These port assignments are specified by the Internet Assigned Numbers Authority (IANA): Port 587: [SMTP] Message submission (SMTP-MSA), a service that accepts submission of email from email clients (MUAs). Described in RFC 6409. Port 465: URL Rendezvous Directory for SSM (entirely unrelated to email)...

Uncomment the required php version.