So, I've been digging through various RFC's for a project I'm working on
and I came upon the following passage in RFC 2557
Note: Content-IDs MUST be globally unique [MIME1]. It is thus not
permitted to make them unique only within a message or within a
single multipart/related structure.
[MIDCID] Levinson, E., "Content-ID and Message-ID Uniform
Resource Locators", RFC 2387, August 1998.
[MIME1] Freed, N. and N. Borenstein, "Multipurpose Internet
Mail Extensions (MIME) Part One: Format of Internet
Message Bodies", RFC 2045, December 1996.
My question to you all is, what's a good way to generate a GLOBALLY unique
ID (the rfc's specify that it is world-unique, not just unique to message)
My first idea was to use an md5 hash of the filename and date, but I can
see some problems with that.
Is there a good way to guarantee that CID's are acceptably unique?
thanx,
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