Mail has never been clean, if you've been using such a simple easy rejection rule, you are likely a majority English provider who doesn't get much else.
It used to be very common to get mail in koi8-r or koi8-u, or in iso-2022-jp or sjis, for example, or even in iso-8859-1 or others around Europe. There are a lot of badly made form senders and such which never bothered to properly implement MIME encoding. Sure, you can throw that all away, and maybe that's fine for your users, but it is not all spam. As most folks moved to utf-8 for everything instead of the mishmosh, more of that unencoded headers moved to utf-8 as well, so now that's the most common 8bit headers now (for our mail flow). It also turns out, most mailers handle this stuff just fine. Heck, djb noted this two decades ago: https://cr.yp.to/smtp/8bitmime.html Auto detecting which charset it is to be nice can be annoying, but isn't that complicated, and like I said, utf-8 is there. Which is kind of understood in the SMTPUTF8 spec, isn't it, the specs don't really have a way to interoperate. Yes, you can't send a message to an EAI address without RFC6531 support, but turns out most servers/clients will handle an RFC6532 message. Yes, please, send correctly encoded messages, but don't assume that badly encoded messages are bad. Brandon On Tue, Apr 10, 2018 at 10:33 AM Mark Milhollan <m...@pixelgate.net> wrote: > But that's the From: comment and Subject: text where they're expected > and already have a way to provide for encoded UTF-8 (or whatever), where > SMTPUTF8 means we will likely begin seeing raw UTF-8 in the From: > mailbox name, and anywhere in Received: and other headers. > > This will make MUAs and thus SPAMmers jobs easier by not having to > encode where allowed and removes an easy rejection / scoring rule, but > other than US(ish) have had a rotten time of it using their own scripts > so something needed to be done. I hesitate to guess how many web site > e-mail address validators will suddenly be wrong(er) and thus the users > are likely going to need US-ASCII only mailbox names (aliases?) anyway. > > > /mark > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop >
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