Layton ServiceDesk - Settings - Libraries - Out of Office
From Layton Support
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The Out of Office email ignore option works to protect against infinite email loops caused by auto-responders, out of office messages, and auto-reply mailbox configurations. To create an out of office ignore rule, enter a search string, then optionally enable Case sensitivity. If any of the rules find a match in the contents of an email, the email will be deleted without being first imported.