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Always receive an error message for the first mail I send each day

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I get the following message when I try sending a mail - "The size of the message you are trying to send exceeds a temporary size limit of the server. The message was not sent; try to reduce the message size or wait for sometime and try again. The server responded: (IP, Sender) first encounter..

I get the following message when I try sending a mail - "The size of the message you are trying to send exceeds a temporary size limit of the server. The message was not sent; try to reduce the message size or wait for sometime and try again. The server responded: (IP, Sender) first encounter..

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This sounds like an issue with your e-mail provider, but please post here your Thunderbird Troubleshooting Information.

At the top right of the Thunderbird window, click the menu button (or use the regular menu at the top), then select Help: Troubleshooting Information.

Click the "Copy text to clipboard" button.  Do not check the box "Include account names"  Then paste (Ctrl-V), the text into your response here. We only need to see the sections down to and including the "Extensions" section, so you can delete the rest.