On 5 May 2020, at 13:05, Henrik K wrote:

In any case, UTF-7 mails can be blocked on sight, no one uses it
legimately..

I wish that were true.

Apparently Evolution supports UTF-7 and can be set to use it with the user being unaware of it. Last year I had an extended exchange with someone who was in that situation and was sending mail with broken PGP signatures as a result: the signatures were not getting encoded.

This was someone whose mail I encountered on 2 different mailing lists dealing with email technical issues, so it wasn't just a random newbie error.

--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not For Hire (currently)

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