Postfix mail forwarding

Postfix is a popular open-source mail transfer agent (MTA) that can be used to forward emails to other email addresses or domains. Here are some ways to set up postfix mail forwarding:

Method 1: Using the virtual_alias_maps parameter

You can use the virtual_alias_maps parameter in the postfix configuration file (/etc/postfix/main.cf) to forward emails to other email addresses or domains.

For example, to forward all emails sent to [email protected] to [email protected], you can add the following line to the main.cf file:

virtual_alias_maps = hash:/etc/postfix/virtual

Then, create a file called /etc/postfix/virtual with the following contents:

[email protected] [email protected]

This will forward all emails sent to [email protected] to [email protected].

Method 2: Using the alias_maps parameter

You can also use the alias_maps parameter to forward emails to other email addresses or domains.

For example, to forward all emails sent to [email protected] to [email protected], you can add the following line to the main.cf file:

alias_maps = hash:/etc/postfix/aliases

Then, create a file called /etc/postfix/aliases with the following contents:

[email protected]: [email protected]

This will forward all emails sent to [email protected] to [email protected].

Method 3: Using a separate file for forwarding

You can also create a separate file for forwarding emails, such as /etc/postfix/forward.

For example, to forward all emails sent to [email protected] to [email protected], you can add the following line to the /etc/postfix/forward file:

[email protected] [email protected]

Then, update the main.cf file to include the following line:

forward_path = /etc/postfix/forward

This will forward all emails sent to [email protected] to [email protected].

Method 4: Using a regex-based forwarding

You can also use a regex-based forwarding to forward emails to other email addresses or domains.

For example, to forward all emails sent to [email protected] to [email protected], you can add the following line to the main.cf file:

regex_maps = hash:/etc/postfix/regex

Then, create a file called /etc/postfix/regex with the following contents:

/.*@[email protected]/ [email protected]

This will forward all emails sent to [email protected] to [email protected].

Note: Make sure to restart the postfix service after making any changes to the configuration files.