My notes, things I have learned, and documentation I have created.

To reset a Garmin Forerunner 305:

Hold the Mode, Reset and Power buttons at the same time for 3 seconds.

This has helped me to get the device to turn on. This has only happened to mine while in the charger. It has happened about five times in the last two or three years.

I configured postfix on my CentOS 5 machine to masquerade my entire private LAN Microsoft Exchange domain to my public internet domain so that sent Exchange email can be routed on the internet.

# vi /etc/postfix/main.cf
…
smtp_generic_maps = hash:/etc/postfix/generic
…

vi /etc/postfix/generic
…
@msexchangedomain @publicdomain
…

postmap hash:/etc/postfix/generic
service postfix restart