Postfix email foward 配置指南

Postfix can be configured as mail forwarding domains server using virtual_alias_maps settings. There are two type of configurations here.

Postfix Mail Forwarding Domains

This is useful if you do not have local mailboxes and server is not acting as MX backup (do not use the following if relay_domains sql map or virtual map is configured). The main purpose of these domains is to forward mail elsewhere. The following example shows how to set up cyberciti.com as a mail forwarding domain. Open main.cf file, enter:
# vi /etc/postfix/main.cf
Make sure following two line exists:

virtual_alias_domains = cyberciti.com
# virtual_alias_domains = cyberciti.com example.com moredomains.com ..
virtual_alias_maps = hash:/etc/postfix/virtual

Open /etc/postfix/virtual file, enter:
# vi /etc/postfix/virtual
Forward email sent to vivek@cyberciti.com to vivek@nixcraft.co.in:

vivek@cyberciti.com   vivek@nixcraft.co.in

You can also implement a catch-all address i.e. email sent to tom@example.com and jerry@example.com should be forwarded to somewhereelse@another.domain.com

@example.com         somewhereelse@another.domain.com

Save and close the file. Type the following command to restart postfix:
# postmap /etc/postfix/virtual
# service postfix reload