when i attach file reject by TYZPR03MB6621.apcprd03.prod.outlook.com and the file return ndr

Toriq Nasrul Haq Sutisna 0 Reputation points

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Microsoft 365
Microsoft 365
Formerly Office 365, is a line of subscription services offered by Microsoft which adds to and includes the Microsoft Office product line.
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Windows 365 Business
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  1. Mike Hu-MSFT 935 Reputation points Microsoft Vendor


    It appears as if the recipient organization has set up mail flow rules that prevent your attachments from being sent, these rules can restrict attachments based on file extensions, file sizes, or other criteria. Typically, to prevent the spread of malware or viruses, organizations configure their email systems to block specific types of files from being sent as attachments. Typically, executable files (e.g., .exe), script files (e.g., .js or .ps1), or certain compressed files may be blocked.

    I recommend that you contact the recipient organization to confirm if there are any mail flow rules that are blocking your attachments.A screenshot of a computerDescription automatically generated

    Hope this helps!