An energy provider which shall be nameless (cough, Ovo, cough) has just
put a new web system live which requires you to go through a
password-reset, confirmation e-mail, click cycle in order to switch over
to using it.
Having problems with not receiving the e-mails, I did a bit of
diagnostic work. The problem was this line in the header of their e-mail:
List-Unsubscribe:
<mailto: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...@mail.ovo-comms.co.uk>,
which is 1455 characters long, and would seem to give them scope for
about 36^1400 different unique identifiers. The limit set in RFC5322 is
998 characters.
You have to wonder sometimes.
Aaaaargh!
John
P.S. I have changed two bits to XXXXXXXXX so you'll need to try 36^20
possible originals (about 13367494538843734067838845976576 or 1.3 *
10^31 options) if you want to unsubscribe me by brute force.
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