Maximum Message Size

[Ken Brooks]

I just got started with Postbox and downloaded messages. Now every message I click on, no matter how innocuous, brings me to this message:

This message exceeded the Maximum Message Size set in the settings for the account, so we have only downloaded the first few lines from the mail server.

I can't find the place to go and fix the maximum message size, and I suspect that something else is going on anyway.is there an obvious fix for this problem? Or an obvious place to go?

Thanks,

Ken