Re: DKIM x= Signature Expiration - Domain Expiration Required?

Hector Santos wrote:

> Section 3.5  "The DKIM-Signature header field"  describes the x= tag as a
> optional signature expiration time value.
>
> I am trying to understand why this value should be trusted and even if its
> fails due to expiration, how does the MTA handle this?
>  

It should be trusted if the signature still verifies. If the signature is
expired, it should be considered the same way as a missing and/or
broken signatures. That is, as if it were not there at all.

      Mike