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"550 5.6.0" NDR and duplicated attachments when an encrypted email is ...
Fixes an issue in which the attachments in an S/MIME protected message are duplicated when the message is sent from Outlook that's in Online Mode in an Exchange Server 2013 environment.
"550 5.6.0 CAT.InvalidContent.Exception" and email isn't delivered in ...
Symptoms. Consider the following scenario: You send an email message by using a Microsoft Exchange Server 2016 mailbox or Exchange Server 2013 mailbox. The subject line of the email message contains unsupported encoded characters, starting from CP or MS and following by "-" instead of a number, such as cp-850.
“550 5.6.0 CAT.InvalidContent.Exception“和电子邮件未在 2016 年和 2013 Exchange ...
症状. 请考虑以下情况：. 使用 Microsoft Exchange Server 2016 邮箱或 Exchange Server 2013 邮箱发送电子邮件。. 电子邮件的主题行包含不受支持的编码字符，从 CP 或 MS 开始，后跟“-”而不是数字，例如 cp-850。. 在这种情况下，不会传递电子邮件。. 此外，你可能会在 NDR ...