2.1.3.2.20 Auto Response Suppress

To generate an X-Auto-Response-Suppress header, clients set the value of the PidTagAutoResponseSuppress property ([MS-OXPROPS] section 2.680).

When the PidTagAutoResponseSuppress property has a value of 0 (zero) or -1, MIME writers SHOULD map its value to the X-Auto-Response-Suppress header as shown in the following table.<58><59>

When the PidTagAutoResponseSuppress property has a value other than 0 (zero) or -1, MIME writers MUST construct the value of the X-Auto-Response-Suppress header as follows: For each bit of the value of PidTagAutoResponseSuppress that is set (left-hand column), append the string in the center column to the header value. If the header value was nonempty, append a comma (U+002C) and space (U+0020) before the new value.

For example, if the value of the PidTagAutoResponseSuppress property is 0x000C, the header MUST be written as:

X-Auto-Response-Suppress: RN, NRN

(Note:  The order of these values in the header is not important.)