Detecting Outlook autoreply/out-of-office emails

Question

Been googling for this and haven\'t found anything ...

Does anybody know if there is a way, given an Outlook email item, to detect whether it was sent by the \"Out O

Answer 1

According to Exchange Server 2007 Out of Office (OOF)1 - Exchange Team Blog, the authoritative sign of an Exchange's Out-of-Office reply is

X-Auto-Response-Suppress:OOF

¹_{"OOF" means "out of facility", a rudiment from Xenix(!) that M$ used for mail in the past.}