Dungeons And Dragons Online: Authentication Server Maintenance - July 18, 10AM - 1PM

Sporkfire has posted the following on the official forums:

The DDO authentication servers will be offline for maintenance on July 18 from 10AM to 1PM Eastern. During this time, you will be unable to log into the game or the account management web site. Characters already in the game will remain logged in, but will be unable to reconnect if they log out.