Hello,
Heiko Schlittermann <hs@???> (Mo 08 Apr 2013 10:33:25 CEST):
…
> we got problems with the header syntax check:
>
> failed: To: =?ISO-8859-1?Q?=22H=E4le,_Anita=22?= <ahaele@???>
> passed: To: =?ISO-8859-1?Q?=22H=E4le=2C_Anita=22?= <ahaele@???>
…
> Is there some document describing the correct parsing of such header
> lines? In RFC5322 (internet message format) and RFC 2045 (MIME
> extensions) I do not find anything that could point me to some answer.
>
> Is it Exims fault? Should/could Exim be more liberal? Or is it the fault
> of the MUA generating the failing line?
My co-worker got it:
http://tools.ietf.org/html/rfc2047#section-5,
subsection (3):
(3) As a replacement for a 'word' entity within a 'phrase', for example,
one that precedes an address in a From, To, or Cc header. The ABNF
definition for 'phrase' from RFC 822 thus becomes:
phrase = 1*( encoded-word / word )
In this case the set of characters that may be used in a "Q"-encoded
'encoded-word' is restricted to: <upper and lower case ASCII
letters, decimal digits, "!", "*", "+", "-", "/", "=", and "_"
(underscore, ASCII 95.)>. An 'encoded-word' that appears within a
'phrase' MUST be separated from any adjacent 'word', 'text' or
'special' by 'linear-white-space'.
Thus it "solved", Exim is correct, and it's the fault of the sending
MTA. (Un)fortunately this incorrect headers are generated only if two
conditions meet: unprintable character, and a comma in the address phrase.
In case anybody is interested and for the records - the information about originating MTA:
Content-Type: multipart/alternative; boundary=Apple-Mail-25-52899134
Mime-Version: 1.0 (Apple Message framework v936)
X-Mailer: Apple Mail (2.936)
(Does anybody know where to report this bug?)
Best regards from Dresden/Germany
Viele Grüße aus Dresden
Heiko Schlittermann
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