I'm working on a mail server that receives messages from users. I want to be able to filter Outlook's "Out of office" autoreply messages. It seems that there's no special header in those messages, so it seems that the only option is to identify them by the subject line (they start with "Out of office AutoReply").
But identifying using the subject line has it's issues too, for example -- what if the users has a different locale and the text will be in a different language?
Has anyone tackled this before and has a better way to identify those messages? (or the list of translations :))