On 29 Nov 2020, at 9:48, Nikolai Lusan wrote:
Traditionally SMTP systems forced everything to be lower case
This is not true.
RFC821 and RFC822 (1982) both define the local part of email addresses
as including upper or lower case letters and optionally case-sensitive
with the sole exception of the required "postmaster" address, which
systems must treat as equivalent in any mix of cases. In both of those
RFCs, the examples used for email addresses typically used mixed-case
local parts.
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
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