Technology KnowledgeBase

Why was my email message rejected - BANNED contents?

The district mail server does not allow some types of files to be included as attachments. This limitation targets files that are commonly used in virus or phishing attacks on computers, such as Windows scripts and command files, dynamic libraries, executables, javascript, and many media types. If your email included one of these file types as an attachment, the entire message would be rejected and you would receive an email back with a subject like:

   BANNED contents from you (.....)

where the information at the end of the subject indicates what type of file was rejected.

If this happens, you will need to use another method to share the attachments. The easiest alternative is the district's MailFile service, which can be used to send attachments up to 2 GB in size. Simple directions on the use of this service are available in KB article 110.

NOTE: Some file types include other files as resources. This is true for Powerpoint, GarageBand, iMovie, iDVD, and many other media-rich file types. If you send one of these files as an attachment and it contains another blocked file type as a resource, the entire message will be rejected. We have asked the vendor to allow us to have the scan only look at the main file, but so far there is no way to prevent this from happening. In these cases, you will need to use MailFile as well (see above).

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