The Courier mail server is a mail transfer agent (MTA) server that provides ESMTP, IMAP, POP3, webmail, and mailing list services with individual components. But, it is best known for its IMAP / IMAPs and POP3 / POP3s (secure version) server component.
Courier can provides support for both regular UNIX operating system account (stored in /etc/passwd) and virtual mail account managed by third party backends such as OpenLDAP, MySQL and so on.
In this quick tutorial, you will learn about installing Courier IMAP SSL digital certificate.
Postfix MTA updated to fix security vulnerabilities such as incorrectly checks the ownership of a mailbox. In some configurations, this allows for appending data to arbitrary files as root. This update has been rated as having moderate security impact.
Since y’day I noticed one of our article related to ORDB.org spam blocker receiving lots of traffic. I received couple of calls from our clients because most emails was getting bounced via Exchange or Postfix mail server.
ORDB is now configured to return each IP as spam source
ORDB was a database of open relay email servers, [...]
Describes how to flush email queue from a shell prompt under UNIX / Linux operating system.
Most mail servers are tight on resources. The Postfix system is designed to run within a finite memory budget. These limits are imposed on each and every user to avoid resource exhaustion. The idea is pretty simple, keep mail server running under conditions of stress, without making the problem worse.
However some time user sends [...]
In this tutorial yo0u will learn about Installing SSL Certificate (Secure Server Certificate) to secure communication between Postfix SMTP server and mail client such as Outlook or Thunderbird.
Malware is used for a harmful purpose. It can be in your software or hardware. Email and free (don’t confuse with OSS) or pirated software is the most famous way to spread malware. It is inserted in a system w/o user notification.
Wikipedia defines Malware as:
Malware is software designed to infiltrate or damage a [...]
