Unlike object IDs, which are used only by the local Exchange MTA, the message ID is part of the message itself and can be tracked across MTAs.是什么意思_Unlike object IDs, which are used only by the local Exchange MTA, the message ID is part of the message itself and can be tracked across MTAs.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句