Re: Fwd: Mail delivery failed: returning message to sender

[Niels Thykier <niels@thykier.net>]

Niels Thykier:
> Andreas Metzler:
>> [...]
>>
>> Hello,
>>
>> No, the encoding was not correct. Compare how you (your MUA) just did it in
>> this message with the rejected one.
>>
>>   From: =?UTF-8?Q?TOMAS_MARTI=c5=a0IUS?= <tomas@puga.vdu.lt>
>>
>>   From: =?utf-8?b?VG9tYXMgTWFydGnFoWl1cyA8dG9tYXNAcHVnYS52ZHUubHQ+?=
>>
> 
> 
>[...]

>From a quick glance, it looks to be specified in RFC1342, which also
specified the ?Q? variant that was used in the accepted mail.


RFC1342:
"""
[...]

   An "encoded-word" is more precisely defined by the following EBNF
   grammar, using the notation of RFC 822:

   encoded-word = "=" "?" charset "?" encoding "?" encoded-text "?" "="

   charset = token    ; legal charsets defined by RFC 1341

   encoding = token   ; Either "B" or "Q"

   token = 1*<Any CHAR except SPACE, CTLs, and tspecials>

   tspecials = "(" / ")" / "<" / ">" / "@" / "," / ";" / ":" / "\" /
               <"> / "/" / "[" / "]" / "?" / "." / "="

   encoded-text = 1*<Any printable ASCII character other than "?" or
                  ; SPACE> (but see "Use of encoded-words in message
                  ; headers", below)
[...]


The "B" encoding

   The "B" encoding is identical to the "BASE64" encoding defined by RFC
   1341.
"""

This is not a comment on whether RFC1342 encoded "From:" headers is
something we is supporting/should support.

Thanks,
~Niels