What do you mean, WeChat SMS was rejected?

Rejection means that he blacklisted you.

If you don't know him, you can't contact him basically.

Because, at present, we can't get his other personal information and contact information through WeChat.

If you are persistent, you can check his information-ID. If it's a pinyin name, try your luck on friends, Renren or campus network. If it is QQ, add friends or leave a message in his space.

There is no other way. .