Why am I asked for a password again and again...

[TDV]

For one of my gmx e-mail accounts I am asked every few months for my password... again and again. I have several gmx accounts, but this one is the only one that does this.

A pop up appears telling me:

"Enter your password for xxxxx @gmx.com on imap.gmx.com"

And when I do, it does not accept it, another pop up appears telling me: "Login to server imap.gmx.com failed."

Asking me to "Enter New Password"

What is this and what can I do about it?

[tanstaafl]

Try deleting the saved password using tools -> options -> security -> passwords -> saved passwords, exiting and restarting Thunderbird (since the deleted password is still in memory) and try again (telling it to save the password when prompted for it). There is a bug where if you get a hard connection failure it will never login if you have a saved password (even if you enter the right password when prompted) that this works around.

One possibility is that your tcp-ip settings are too heavily tweaked to increase your speed. You need to balance performance and dealing with poor connections.