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1.6 Canceling News

The message-cancel-news command cancels the article in the current buffer.

The value of message-cancel-message is inserted in the body of the cancel message. The default is ‘I am canceling my own article.’.

When Message posts news messages, it inserts Cancel-Lock headers by default. This is a cryptographic header that ensures that only you can cancel your own messages, which is nice. The downside is that if you lose your ‘.emacs’ file (which is where Gnus stores the secret cancel lock password (which is generated automatically the first time you use this feature)), you won’t be able to cancel your message. If you want to manage a password yourself, you can put something like the following in your ‘~/.gnus.el’ file:

(setq canlock-password "geheimnis"
      canlock-password-for-verify canlock-password)

Whether to insert the header or not is controlled by the message-insert-canlock variable.

Not many news servers respect the Cancel-Lock header yet, but this is expected to change in the future.

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