Navigate to matching brace in NetBeans

So I wanted to know the keyboard shortcut to navigate between matching braces in my PHP (and other) code in NetBeans. I’m running NetBeans 8.2. So I searched and found General Editor Features which said “to find a shortcut for a specific command, type the command name in the Search field.” So the Search field they’re talking about is on the Keymap screen under Tools -> Options. After creating myself a custom Keymap Profile based on the NetBeans default settings I searched in the ‘Search:’ box for ‘match’ and found ‘Insertion Point to Matching Brace’ which is Ctrl+OPEN_BRACKET. Everything is easy when you know how!

Adding a sender blacklist to Postfix

Here at ProgClub, as moderator for our mailing lists, I get a bunch of spam that I have to get rid of every day, to keep our lists sparkling and spam-free. I regularly get spam from senders from, and I wanted to add their entire domain to a blacklist on our mail server… I hadn’t configured a Postfix blacklist before, so I did a little research and came up with this:

I created a file /etc/postfix/sender_access like this: REJECT

Then I created the access database:

# postmap /etc/postfix/sender_access

Then I added the sender restrictions into /etc/postfix/

smtpd_sender_restrictions =
  check_sender_access hash:/etc/postfix/sender_access

Then I restarted postfix and was done! Everything is easy when you know how.

For reference, here is the doco which I read to help me: