Hello,

I have an application that populates the Reply-To header and sends the
e-mail to the list. Under very specific conditions, Mailman may malform
this Reply-To header. What I found out is that the second address must
match the pattern "Some Name" <[email protected]>. The e-mail is properly
formatted when it gets into Mailman, but when it is sent out to list
members, it gets malformed to [email protected]. Some more
info: the first address name is UTF-8 encoded and then "Some Name" wraps
into the other line at the middle.

I tried to reproduce it like this:
Reply-To: =?utf-8?b?QUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQQo=?= <
[email protected]>, "Some
 Name" <[email protected]>

But the problem is not triggered. The problem seems to only present when I
send the mail from the application, and so it would be easy to blame the
app, but again when I check the queue files, it seems to send the
e-mail correctly. It really seems to be a problem with Mailman, I just
can't find the exact conditions to trigger it.

For privacy reasons I can not share the exact copy of the e-mails on the
list, but would it be possible to send it privately so devs could find out
where might be the problem?


Best regards,
MegaBrutal
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