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:

• The “From” address is incomplete or malformed

• The subject line contains symbols or encoded characters

• Headers include unsupported formatting or spacing

To resolve:

1. Verify your newsreader has a valid email format in the identity settings.

2. Avoid using rich formatting, emojis, or special characters in subject lines.

3. Stick to plain text formatting for headers.

If your configuration seems correct but errors continue, contact Tweaknews support to investigate further.