Join Jon Peck for an in-depth discussion in this video Troubleshooting Exim, part of Learning Linux for PHP Developers (2014).
…Exim is a very stable and reliable server…and we've only made a small configuration change.…The Ubuntu Server Guide on Exim 4 at help.ubuntu.com…provides more comprehensive details on how to configure this service.…However, it's good to know that it's working correctly.…If there is a deliverability problem, then it's good…to see if there is a local problem first.…If e-mail isn't getting sent, first check to see if the exim process exists.…Ps aux then pipe that to grep for exim.…If it's not listed, try restarting the process.…
Sudo service exim4 restart.…We can also check to see if exim is…listening for connections, which, by default, is on port 25.…Sudo netstat -nap | grep, exim.…Excellent, exim4 is listening on port 25.…The exim log files are located in cd /var/log/exim4.…We can watch the main log file in real time using tail.…So, tail -f /var/log/exim4/mainlog.…
If an email is listed as sent, or hasn't been received, check in your SPAM folder.…Depending on your content, or frequency of…the email, it might have been filtered out.…
The demonstrations are performed with the Ubuntu LTS distribution of Linux, but the skills taught here are also applicable to other Linux distributions. Every command is described in detail in context, and a comprehensive quick reference is provided for convenience.
- What is Linux, and why should I use it?
- What's a LAMP, and why does it matter?
- Creating and configuring a virtual machine
- Working with the Linux command line
- Configuring the servers, including Apache virtual hosts
- Building a development server dashboard
- Using PHP package managers like Composer and PEAR
- Installing Drupal, WordPress, and more on the server
- Self-hosting Git repositories, including a web interface
- Enhancing the server with debugging and profiling
- Exporting a virtual appliance to use on another machine
- Server troubleshooting techniques
Skill Level Beginner
Q: The pecl installation of uploadprogress fails, saying it is not a valid package archive. How can I install uploadprogress?
A: There is a bug in Ubuntu's pecl that was introduced after the course was recorded; the workaround command is "sudo pecl install -Z uploadprogress"
Q: Where can I get the exact versions of the software used in this course?
Q: In Windows, git operations ask for a password. Why?
A: Make sure that pagent (PuTTY agent) is running and has the private key loaded. See Chapter 3, movie 4 for details.
PHP with MySQL Beyond the Basicswith Kevin Skoglund10h 26m Intermediate
1. Getting Started
2. Creating a Virtual Machine
3. Using the Server Command-Line Interface
4. Initial Server Configuration
5. Building a Development Server Dashboard
6. Installing PHP Applications for Site Development
7. Source Code Management
Introducing Git2m 16s
8. Enhancing the Development Server
9. Advanced VirtualBox Techniques
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