Postfix setup catch-all email accounts using /etc/postfix/virtual

To set up a catch-all email account using the /etc/postfix/virtual file in Postfix, you will need to follow these steps:

1. Edit the /etc/postfix/virtual file and add a line for the catch-all account. The syntax is:

@domain.com username

Replace domain.com with the domain that you want to catch all emails for, and username with the username of the catch-all account. For example, to catch all emails sent to @example.com, you would add the following line:

@example.com catchall

2. Add the virtual alias mapping to the /etc/postfix/main.cf file by adding the following line:

virtual_alias_maps = hash:/etc/postfix/virtual

3. Reload the Postfix configuration to apply the changes:

sudo service postfix reload

That's it! Postfix should now be configured to catch all emails sent to the specified domain and deliver them to the catch-all account.