Justin Mason wrote:
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Andrew Pam writes:
Message-IDs MUST be globally unique as defined in the RFCs, so the
chance of collision is zero unless someone has very broken (or malicious)
email software.
A good 80% of email, according to recent statistics, is indeed broken
and/or malicious -- spam, malware, etc. I've seen many spams with
duplicate or missing Message-IDs.
Just FYI...
- --j.
14449 messages
9732 with no message id
1849 caught by check_earlytalker
962 sender_permitted_from (spf)
203 check_basicheaders
549 require_resolvable_fromhost
6064 no such user
0 dspam
2 miss
2/14449 = potential benefit of require_message_id plugin.
It could not run before many of the others listed above
so as to save that overhead.
Needs to check ucase and lcase, Message-I[dD]
-Bob