a bug?:Encoring for outgoing mail

[ganymean]

Hi,folks.

I am now testing sending mail to client in Japanese environment.
suggetion for any one?

1. preconditions
* Default email encoding of a client-side： ISO-2022-JP(7bit)

* Encoding setting in config.php
'charset' = 'UTF-8',
'html_encoding' = '8bit',
'text_encoding' = '7bit',
'html_charset' = 'UTF-8',
'text_charset' = 'ISO-2022-JP',

* Ticket replies from staff CP to a user
* I send a message twice for client.

2. test results
　1) The first
　　Header information：
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset=ISO-2022-JP
　　Encoding of Subject Bochy： ISO-2022-JP
　　Encoding of message body： UTF-8

　2) The second
　　Header information：
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset=UTF-8
　　Encoding of Subject： UTF-8
　　Encoding of Message body： UTF-8
3. consideration
* Encording of a message body was 'UTF-8' regardless of setting contents of Config.php of Encording.

* Only the first time was reflected, and, as for the encoding of Subject, setting contents of Config.php were changed in 'UTF-8' after the second automatically.

* Encoding setting of an outgoing email were changed in 'UTF-8' after sending a mail automatically.

regards,

[Hiro]

Did you find any solution? I got the same problem to send outgoing email when using iso2022jp.

If you find the solution, please tell me about it.