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สวัสดีคะ

พอดีวันนี้จะส่ง email แนบ file PDF ปกติ ให้ตัวเอง แต่ส่งกี่รอบก็มีปัญหา

แต่ถ้าไม่แนบ file จะส่งผ่านปกติคะ จุดสังเกตเป็นเฉพาะ PDF file เท่านั้น

ไม่ทราบว่าต้องแก้ไขยังไงคะ

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