Hi, 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. Hope this helps!

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

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1 answer

Mike Hu-MSFT 2,090 Reputation points Microsoft Vendor

2024-04-29T08:36:44.77+00:00

Hi,

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.

Hope this helps!
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Mike Hu-MSFT 2,090 Reputation points Microsoft Vendor

2024-05-02T01:35:57.26+00:00

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

1 answer