Tweaknews 441 Posting Error: Header Doesn’t Match Internet Format
The 441 – Posting Failed: Header Not in Internet Syntax error on Tweaknews means your message header was rejected for not matching the required Internet format.
Most common causes:
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The “From” address is incomplete or malformed
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The subject line contains symbols or encoded characters
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Headers include unsupported formatting or spacing
To resolve:
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Verify your newsreader has a valid email format in the identity settings.
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Avoid using rich formatting, emojis, or special characters in subject lines.
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Stick to plain text formatting for headers.
If your configuration seems correct but errors continue, contact Tweaknews support to investigate further.