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Thunderbird changes the incoming email attachment file extension to underscore

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michael_shm
michael_shm
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Solved! It was Anti-virus that changed the names.

"The last letter of an incoming email attachment file extension keeps changing to underscore symbol "_". How to stop that?"

Solved! It was Anti-virus that changed the names. ''"The last letter of an incoming email attachment file extension keeps changing to underscore symbol "_". How to stop that?"''

Modified by michael_shm