This is why maintenance windows are so important. There's a real debate as to how long passwords should be kept. We want our users to change their passwords every 30 / 42 / 60 / 90 days because if a password stays out there long enough, the window to brute force grows larger, making it more likely that if someone were to get the password hash, a brute force attempt could succeed. What's true for user passwords is true for "service accounts," too, though. While it's a burden to change these passwords, it's probably in everyone's best interest to do so. There needs to be a methodology to change passwords like this in the event someone with knowledge of the password (or the ability to gain the password) leaves the organization.