kmail problem: can't send mail with attachments

[breadbread1984]

I used to send mails with attachments properly through kmail. However, I recently find the kmail fail to send any mails with attachments. It prompt error message (translated from Chinese error message) that invalid transmission method ...(gabled character).

I tried to find the difference between the mail generated after the problem occurred and the mail generated and sent successfully before. I found that the mail generated after the problem occurred has a new attribute enclosed in the email header.

before:

...
MIME-Version: 1.0
Message-Id: <201109072107.14200.xxx@xxx.com>
...

after:

...
MIME-Version: 1.0
X-KMail-Recipients: ???????????@xxx
Message-Id: <201109171033.58987.xxx@xxx.com>
...

The

???

are the garbled characters. Does this garbled characters has something to do with the failure of transmission. If yes, how can I get rid of this attribute from being added to the generated mail? Thanks for any ideas!

[Snowhog]

Re: kmail problem: can't send mail with attachments

Likely the attachment name and/or the recipient name(s) contain characters that can't be interpreted by the language pack/font you are using. When that is the case, such characters are shown as 'something else' - place holders if you will - that other applications can/do have trouble handling.