I use Mozilla Thunderbird, running under Windows 7. I had to switch to that because Windows Live Mail is so crappy. Now, I often get the following on incoming emails: "This message exceeded the Maximum Message Size set in Account Settings, so we have only downloaded the first few lines from the mail server. Download the rest of the message.This message exceeded the Maximum Message Size set in Account Settings, so we have only downloaded the first few lines from the mail server."
How do I fix this?

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