sendmail, 4th Edition

Content-Disposition:

How MIME contents should be disposed RFC2183

The MIME Content-Disposition: header specifies how a MIME attached file should be handled. The form of the Content-Disposition: header looks like this:

Content-Disposition:  type; parameter=value ...

Here, the value for this header is a sequence of one or more equates, each separated from the others by a semicolon and one or more space or tab characters. The legal parameters are shown in Table 25-13.

Table 25-13. Content-Disposition: parameters

Parameter	Description of value
filename	The name of the file into which to save the contents. This can be a full path specification. In general, automatically honoring this equate represents a risk.
creation-date	The original time and date the content was created.
modification-date	The time and date the content was last modified.
read-date	The time and date the content was last read.
size	The size in bytes of the content.

In general, the Content-Disposition: header should be advisory.