Postfix How To Change Sending IP Address To Specific IP Binding or Interface

I thought I'd post this becuase there is some bad information out there.  Some guides tell you to edit /etc/postfix/master.cf (-o smtp_bind_address=) but this doesn't work.  The same guide also says if you don't change it there you end up changing the listening IP/bind interface which is also not true.

Here is a simple and effective way to change Postfix's sending/binding/outgoing IP address (very important for reverse DNS and so mail servers don't block you):

vi /etc/postfix/main.cf

#add this option

smtp_bind_address=192.168.5.80

*Obviously change the 192.168.5.80 to the outgoing address you want to use for Postfix


Tags:

postfix, ip, binding, interfacei, becuase, guides, edit, etc, cf, smtp_bind_address, doesn, bind, interface, outgoing, dns, servers, vi,

Latest Articles

  • Centos 7 how to save iptables rules like Centos 6
  • nfs tuning maximum amount of connections
  • qemu-kvm error "Could not initialize SDL(No available video device) - exiting"
  • Centos 7 tftpd will not work with selinux enabled
  • Debian Ubuntu Mint Howto Create Bridge (br0)
  • How To Control Interface that dhcpd server listens to on Debian based Linux like Mint and Ubuntu
  • LUKS unable to type password to unlock during boot on Debian, Ubuntu and Mint
  • Debian Ubuntu and Linux Mint Broken Kernel After Date - New Extra Module Naming Convention
  • Wordpress overwrites and wipes out custom htaccess rules and changes soluton
  • Apache htaccess and mod_rewrite how to redirect and force all URLs and visitors to the SSL / HTTPS version
  • python 3 pip cannot install mysql module
  • QEMU-KVM won't boot Windows 2016 or 2019 server on an Intel Core i3
  • Virtualbox vbox not starting
  • Bind / named not responding to queries solution
  • Linux Mint How To Set Desktop Background Image From Bash Prompt CLI
  • ImageMagick Convert PDF Not Authorized
  • ImageMagick Converted PDF to JPEG some files have a black background solution
  • Linux Mint Mate Customize the Lock screen messages and hide username and real name
  • Ubuntu/Gnome/Mint/Centos How To Take a partial screenshot
  • ssh how to verify your host key / avoid MIM attacks