Known mail servers that reject attachments
Depending on your system setup, phishing test emails that 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||All Attachments with Macros (.ppt, .xls, and .doc)|
|Office 365||All Attachments with Macros (.ppt, .xls, and .doc)|
This list is not inclusive of all affected attachment types or mail servers and may change over time. Mail client and server rules change often, so your experience with attachment delivery may vary.