Suppress Automatic out-of-office replies

[Tyler Thueson]

Our HipChat Mailroom address is in a distribution list, which as you can expect generates a lot of automatic replies whenever there is a holiday and many distribution recipients are out of the office. Suggest using one or more of the following heuristics to prevent these from spamming the HipChat room:

Header="auto-submitted: auto-generated" Header="x-ms-exchange-generated-message-source: Mailbox Rules Agent" Subject="^Automatic reply: "