Known Mail Servers that Reject Attachments
Depending on your system setup, phishing test emails which contain certain types of attachments may be blocked. See below for known mail servers that reject certain attachment types. We recommend using alternate file types when testing your users:
| Mail Server | Type of Attachment Rejected |
| Google Suite | Word Documents with Macros (.doc), Excel Documents with Macros (.xls), Zipped Word Documents with Macros (.zip), Zipped Excel Documents with Macros (.zip), as well as PDFs. |
| Office 365 | All Attachments with Macros (.ppt, .xls, and .doc), Excel Documents without Macros (.xlsx), as well as PDFs |
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