On 8 Oct 2019, at 15:57, Aaron C. de Bruyn via mailop wrote:
[...]
Maybe I'm getting old and forgetful, but I seem to recall the RFCs
saying
the Message-Id was nothing more than a tracking identifier and could
be
complete garbage.
Not exactly garbage: if it exists, it needs a '@' and the legal content
is slightly less permissive than the 'addr-spec' definition (i.e. email
addresses.) Also, it must be unique, so using a real fully qualified
hostname (i.e. one that no one else will use) is useful. OR: use none,
and have your gateway generate one.
https://tools.ietf.org/html/rfc5322#section-3.6.
Can someone at Google shed some light on this?
Note that I am NOT Google.
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
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