1, 您的域名信息。 Texma.com.tw 2. 完整的退件訊息。 Your message has encountered delivery problems to the following recipient(s): Tina_Chang [information has been removed by moderator] (Was addressed to Tina_Chang [information has been removed by moderator] ) Delivery failed after 1 attempts within 0 minutes fenny_hsu@ [information has been removed by moderator] (Was addressed tofenny_hsu [information has been removed by moderator] ) Delivery failed after 1 attempts within 0 minutes bridget_liu [information has been removed by moderator] (Was addressed to bridget_liu [information has been removed by moderator] ) Delivery failed after 1 attempts within 0 minutes Destination domain does not exist. 3. 您和對方是否有加域環境。 對方廠商我不知道，但公司電腦都有加入網域，目前Office 365帳號也是透過ADFS同步上去的 4. 對方郵件服務器的類型。 這個需要問一下對方
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