用QQ邮箱创建的账号，给其他默认中继注册的帐号发信息，对方能受到。但是对方发信息，我这个QQ邮件创建的账号在deltachat里面收不到，只是在QQ邮箱里面收到一份带两个附件的邮件。
Modified autotranslation:
If you use an account created with QQ mailbox to send messages to accounts registered with other default relays, the other party can receive them. But when the other party sent a message, it could not be received in deltachat using the account created with QQ mailbox. I only received an email with two attachments in the QQ mailbox.
https://wx.mail.qq.com/?lang=en (Mandarin)
Is the other party sending you an encrypted message? Are you seeing the e-mail with two attachments in Deltachat or in webmail?
对方是否向你发送了加密信息？您是在Deltachat还是在webmail中看到两个附件的邮件？
The messages sent to me by the other party via deltachat must be encrypted, because there is no option not to encrypt in deltachat now. I saw the email with two attachments in webmail, at the same time, my deltachat client didn’t respond at all.
对方用deltachat给我发的信息肯定是加密的，因为现在deltachat里面已经没有不加密这个选项了。我是在webmail中看到两个附件的邮件，同时我deltachat客户端没有任何反应。
I hope I understand correctly.
- Thou art using Deltachat with a QQ e-mail account.
- Other-party is using Deltachat with a default-relay e-mail account (Other-party created this account in Deltachat).
- The two of you scanned the QR code of one Deltachat, using the other Deltachat.
- Thou canst send encrypted messages to Other-party. The messages appear in Other-party’s Deltachat.
- Other-party can send thee messages, and the messages appear in thy QQ webmail client. But the messages do not appear in thy Deltachat.
It is still possible to send and receive unencrypted messages in Deltachat. The default-relay e-mail accounts created in Deltachat can’t send unencrypted messages. Two QQ accounts could exchange unencrypted messages, with both using Deltachat. They could also exchange encrypted messages, with both using Deltachat. A QQ account and a default-relay account can only exchange encrypted messages.
I am not sure what is wrong. What versions of Deltachat are the two of you using?