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A comment on The dots do matter: how to scam a Gmail user. Parent comment

Re:The dots do matter: how to scam a Gmail user by avar on Sunday April 08, 2018 @05:49AM (#16785414)
The domain being in any case for the purpose of delivery is part of the standard, but there's nothing I know if which would prohibit you from implementing local delivery and routing in any way you want once the mail is accepted.
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Re:The dots do matter: how to scam a Gmail user by written on Sunday April 08, 2018 @02:18PM (#16787423)
You have no guarantee that the domain part case is preserved from what the user wrote, if it's not defined to be case-sensitive. So you can do what you want, but the input data are not reliable.
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