How to Resolve the 440 Posting Failed Internet Header Error
If you're using Tweaknews and see the message "440 Posting Failed - Header Not in Internet Syntax," it means your post headers are not properly formatted.
What to Look For
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Incorrect email address in the "From" field
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No subject or one with special characters
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Inclusion of emojis or non-standard characters
Fix the Problem
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Correct the Email Format: Use a format like
[email protected]
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Check the Subject Line: Avoid blanks and stick with simple characters.
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Use Standard ASCII Text: Remove emojis and symbols.