Using Sendmail as a Multi-Platform Mail Router
The mail routing hub has been in operation at Caliber for about three months, and in that time it has routed over 48,000 messages. Given current traffic statistics, I expect it to handle about 600,000 messages during its first year. Fortunately, the few problems we've experienced have been due to configuration problems. It's too easy to leave out a period here or a dollar sign there. Linux and sendmail have performed flawlessly.
In a perfect world this solution wouldn't be needed. If the Caliber companies used only one common e-mail platform, there would be no need to look up mailbox names and route messages to the right gateway. But many large companies have a number of legacy systems that won't be going away any time soon. Those are exactly the types of environments where tools like sendmail work best. Due to network logistics and geography, we will still be using some of our legacy mail systems until 1998. In the meantime, our Linux e-mail hub will continue chugging through messages, routing them between disparate platforms and helping us meet increasing user expectations.
Tom Lowery (email@example.com) is Project Manager of E-Mail and Groupware Development at Caliber Technology.
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
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With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide