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Re: The transition to UTF-8 header fields

1999-02-11 12:05:23
At 18.51 +0000 1999-02-11, D. J. Bernstein wrote:
the vast majority of deployed MTAs cannot handle 8bit headers,

Data points: qmail is 8-bit-clean. sendmail (8.8.0 and above) removes
bytes 128-159. The Cyrus IMAP toaster, apparently, bounces any message
with an 8-bit header field. Any other reports?

Gateways to non-SMTP environments generally can not handle 8-bit characters in headers. With can not I talk about anything between crashing to non-delivery of that specific message, to just passing on the data as being corrupt. The gateway itself can though handle QP or Base64 CTE in the body and headers correctly.