Re: What are the { curly } brackets for in main.cf?

[Noel Jones]

On 6/21/2010 12:44 PM, Jeff Sherk Forerunner Ministries wrote:

I notice lines like these:

indexed = ${default_database_type  
<http://www.postfix.org/postconf.5.html#default_database_type>}:${config_directory  
<http://www.postfix.org/postconf.5.html#config_directory>}/

smtp_generic_maps
<http://www.postfix.org/postconf.5.html#smtp_generic_maps> =
${indexed}generic

What are the { curly } brackets for?
What does {indexed} do?

Thanks

http://www.postfix.org/postconf.5.html