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Re: [Nmh-workers] Message-IDs and Content-IDs

From: Lyndon Nerenberg
Subject: Re: [Nmh-workers] Message-IDs and Content-IDs
Date: Thu, 19 Jul 2012 17:25:07 -0700 (PDT)
User-agent: Alpine 2.00 (BSF 1167 2008-08-23)

That was mine, and no it doesn't have /dev/random.  But, as I said
earlier, I'd prefer to opt-out of this whole cryptographic host part
concept anyway.

It's not cryptographic, it's just a case of trying to achieve uniqueness without too much effort. The world won't end if message-ids collide.

And don't get too caught up with local vs. host parts of message-id strings. The idea of <address@hidden> was an inexpensive way to generate a unique qualifier for the entropy, back when entropy was expensive. Today, entropy is cheap, so any opaque random string works fine. The only reason we keep the '@' requirement is for compatibility with software written to previous versions of the *822 specifications.


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