1621058650.vac -

A more abstract feature exploring the USPS "VAC" code , which mail carriers use to mark unoccupied or vacant addresses .

A deep dive into what happened on May 15, 2021, and why someone might have archived it in a .vac format. 1621058650.vac

Ipswitch IMail Server uses .vac files to store vacation auto-response messages. A more abstract feature exploring the USPS "VAC"

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