The message they sent you was:
A reply of yours, quoted below, was deleted by a Bitcoin Forum moderator. Posts are most frequently deleted because they are off-topic, though they can also be deleted for other reasons. In the future, please avoid posting things that need to be deleted.
このようなメールがきて、投稿が削除されたのですが理由がいまいち理解出来ません
どなたか教えて頂けますでしょうか？
削除理由を個別に答える事はできません。
ご自身でフォーラムルールなどを確認頂き、削除されないような書き込みを心掛けて下さい。
Bitcointalkのルール、ガイドライン、FAQhttps://bitcointalk.org/index.php?topic=2966475.0