Postfix /etc/systemd/postfix-resolvconf.service
Compatibility
File Info
- Size
- 11 lines
- MD5
- 656a1893f3f9d1058f769fdb9cd7a614
- SHA256
- a7f3e175f647d63e902304bba0e07c6f5acd451b33a907468a17693cac5aaa5d
Quick Commands
curl https://exampleconfig.com/api/v1/config/original/656a1893f3f9d1058f769fdb9cd7a614?hint=postfix-resolvconf.service
wget -O postfix-resolvconf.service https://exampleconfig.com/api/v1/config/original/656a1893f3f9d1058f769fdb9cd7a614?hint=postfix-resolvconf.service
[Unit] Description=Copies updated resolv.conf to postfix chroot and restarts postfix. Documentation=man:postfix(1) man:resolvconf(8) [Service] Type=simple ExecStart=/etc/resolvconf/update-libc.d/postfix [Install] WantedBy=multi-user.target
How to Install Postfix
Alpine Linux
sudo apk add postfix
Debian
sudo apt update && sudo apt install postfix
Red Hat Enterprise Linux
sudo yum install postfix
Ubuntu
sudo apt update && sudo apt install postfix
Configuration File Location
Complete Postfix Configuration Guide
- What is postfix-resolvconf.service?
- Download the original 'postfix-resolvconf.service' (main.cf) configuration file from a fresh Postfix installation on Ubuntu 24.04 LTS (Noble Numbat). This is the factory-default mail server configuration, essential for email system recovery, anti-spam setup, and understanding secure mail relay settings.
- Technical Details
- Located at '/etc/systemd/postfix-resolvconf.service', this 11-line file controls SMTP authentication, TLS encryption, spam filtering, mail routing, and delivery policies. Powers email infrastructure for millions of domains and handles everything from personal mail servers to enterprise email systems processing thousands of messages daily.
- Common Configuration Question
- How do you configure Postfix for secure mail delivery, spam prevention, and high availability on Ubuntu 24.04?
- Why Use This Configuration?
- This default configuration includes SPF/DKIM support, TLS encryption, and anti-spam measures. Critical for email administrators, system administrators, and DevOps engineers managing production mail infrastructure.
Frequently Asked Questions
When should I use this postfix-resolvconf.service file?
Use this original configuration file when you need to restore Postfix to its default state after misconfiguration, during fresh installations, or as a baseline for customization. It's particularly useful for troubleshooting when your current config isn't working properly.
How do I restore Postfix to default settings?
Download this file and replace your current configuration at /etc/systemd/postfix-resolvconf.service. Make sure to backup your existing configuration first, then restart the Postfix service to apply the changes.
Is this postfix-resolvconf.service file secure for production use?
This is the factory-default configuration that ships with Postfix on Ubuntu 24.04 LTS (Noble Numbat). While it provides a secure baseline, you should review and customize security settings based on your specific production requirements and compliance needs.
What's the difference between this and other OS versions?
This configuration is specifically from Ubuntu 24.04 LTS (Noble Numbat). Different operating systems and versions may have slightly different default settings, security patches, or feature availability. Check the compatibility section above for other OS versions.
Can I use this configuration file for Postfix troubleshooting?
Yes, this original configuration is excellent for troubleshooting. Compare it with your current settings to identify modifications that might be causing issues, or temporarily replace your config with this one to isolate problems.
