On Thu, 2007-08-02 at 08:36 +0800, Tan Shao Yi wrote:

Will it be possible to make this available in the 1.0 branch? UW-IMAP seems to continue to process e-mails without the MIME-Version, so long as it has the Content-Type or -Encoding header.

http://hg.dovecot.org/dovecot-1.0/rev/5c29a60f0960

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?

Cheers, Tan Shao Yi

On Thu, 2 Aug 2007, Tan Shao Yi wrote:

Hi Timo,

Thanks so much.

UW-IMAPD includes an additional check for the Content-Transfer-Encoding too. Would it be a good idea to include it too?

From rfc822.c in UW-IMAPD:

if (!strcmp (tmp+8,"TRANSFER-ENCODING") || (!strcmp (tmp+8,"TYPE") && strchr (d,'/'))) { MM_LOG ("Warning: MIME header encountered in non-MIME message", PARSE);

Cheers.

On Thu, 2 Aug 2007, Timo Sirainen wrote:

...

On Thu, 2007-08-02 at 08:36 +0800, Tan Shao Yi wrote:

...

Will it be possible to make this available in the 1.0 branch? UW-IMAP seems to continue to process e-mails without the MIME-Version, so long as it has the Content-Type or -Encoding header.

http://hg.dovecot.org/dovecot-1.0/rev/5c29a60f0960

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.