Why are the attachment sent change its extention to .BIN or .DAT?

[Marcelo]

Whe I send an attachment (exel, word, powerpoint, etc), it´s received as a
file with the same name ans size but with the extention ".BIN" or ".DAT".
Somebody know how can I solve it? Thk

 

[SgtRich]

Whe I send an attachment (exel, word, powerpoint, etc), it´s received as a
file with the same name ans size but with the extention ".BIN" or ".DAT".
Somebody know how can I solve it? Thk

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