This document allows broader use of the "Expires" message header field for mail messages. Message creators can then indicate when a message expires, while recipients can use this information to handle an expired message differently.
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Sandhill cranes, Bosque del Apache National Wildlife Refuge, New Mexico, USA (© Terry St.Louis/Getty Images)
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Recently published RFCs
Source Address Validation (SAV) is an important means to mitigate IP source address spoofing (RFC 2827). This document analyzes the gaps in current operational mechanisms for intra-domain SAV. It also identifies the properties that new intra-domain…
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Standing stones at Avebury in Wiltshire, England (© George W Johnson/Getty Images)
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