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

From: valdis . kletnieks
Subject: Re: [Nmh-workers] Message-IDs and Content-IDs
Date: Thu, 19 Jul 2012 10:02:58 -0400

On Thu, 19 Jul 2012 08:32:59 -0500, David Levine said:

> 64 bytes?  Though 64 bits seems too short.

64 bits should be plenty.  At that point, the chances of an accidental collision
of Message-ID:s due to a crypto failure is already far below other software
bugs causing Message-IDs to be reused.  Remember, Message-ID isn't guaranteed
to be crypto-secure - we'd need a *lot* more infrastructure worldwide to
actually guarantee that.

(Remember that many of us store those Message-ID's in 'procmail -D' files.
No sense in bloating them beyond what's needed ;)

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