I often receive two identical copies of GMF messages, such as the recent one about Facebook. I have only one membership in GMF and only one groups.io registration with a password. Not every message is duplicated but many are. The full headers of each duplicated message are identical, as is the message content.
Any idea why?
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Best wishes,
Larry McDavid W6FUB
Anaheim, California (SE of Los Angeles, near Disneyland)