[Dovecot] Missing MIME-Version header in e-mails.

[Tan Shao Yi]

On Thu, 2 Aug 2007, Timo Sirainen wrote:

> On Fri, 2007-08-03 at 01:04 +0800, Tan Shao Yi wrote:
>> Hi Timo,
>>
>> I just tried your patch in hg and realised it also requires the
>> "Content-Transfer-Encoding: 8bit" to be present.
>>
>> I'm seeing some really bad mailers at my site that provide just header
>> Content-Type: text/html; "charset=iso-8859-1" :(
>>
>> Is there a possibility for us to accommodate such mails as MIME?
>
> Well, I'm not sure how you'd want Dovecot to handle it. All of this
> basically only changes BODY and BODYSTRUCTURE replies. With
> Content-Type: header Dovecot returns its contents, but a missing
> Content-Transfer-Encoding: causes it to use 7bit as default:
>
> * 1 FETCH (BODY ("text" "plain" ("charset" "iso-8859-1" "format"
> "flowed") NIL NIL "7bit" 623 22))
>
> So are you saying that you'd want it to use 8bit as default?
>
> Although if your Content-Type really has quotes around charset, that's
> the problem. It's completely broken then and Dovecot just ignores it:
>
> * 1 FETCH (BODY ("text" "plain" ("charset" "us-ascii") NIL NIL "7bit"
> 623 22))
>
> UW-IMAP handles it a bit differently:
>
> * 1 FETCH (BODY ("TEXT" "PLAIN" ({20}
> "CHARSET=ISO-8859-1" "MISSING_PARAMETER_VALUE" "FORMAT" "flowed") NIL
> NIL "7BIT" 623 22))


Hi Timo,

Thanks for the explaination. I think the bad e-mail header I received was 
not too good. The patch applied is OK.

Cheers.