Cyrus sasld testsaslauthd connect() : No such file or directory 0

While trying to debug a postfix authentication issue in Debian 6, I had to use testsaslauthd to test things out:
testsaslauthd -s smtp -u foo@example.com -p test

only to get the following error:
connect() : No such file or directory 0

This is apparently because a lot of people (and authors) follow the same guide for configuring postfix and saslauthd. One of the steps missing is to symlink and saslauthd directory to a location within postfix. To fix:

• Go to /var/run.
• Move the saslauthd directory to saslauthd.bak (just as a note):
  mv saslauthd saslauthd.bak
• Run the following command to create the symlink:
  ln -s /var/spool/postfix/var/run/saslauthd /var/run/saslauthd
• Restart saslauthd for good measure:
  /etc/init.d/saslauthd restart

This should fix the error. Good luck!