IPv6 and dovecot

For my mail server I use dovecot.  By default this only binds its sockets in IPv4.  It is however trivial to enable binding of IPv6 as well.  Simply change the "listen = *" entry in its configuration (/etc/dovecot/dovecot.conf) as below:

listen="*, [::]" 

With that done and the service restarted my email if now available over IPv6 too.  This should become the default most likely.