"WARNING: failed verification -- update retained (will try again)" message

[sambalist at discosucks.it]

Hi there!

On a daily backup script, I am getting a lot of these messages:

  WARNING: <filename> -- update retained (will try again).

I've tried googling, but i can't figure out what these messages exactly
mean and how i can solve them.

Any hint?

Thank you

Gabriele

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