Therefore, or, therefor,

[zhaobb]

It rained, therefore, the sports meeting was put off.

I have never been to Beijing. Therefore, I don't know much about it.

I am confused about the use of punctuation of "therefor". They are the same or not?

 

[Cagey]

You have spelled the word correctly for the meaning it has in your sample sentence.
Therefor is a different word.

Here is a previous thread that discusses the difference: therefor therefore
If it doesn't answer your question, you are welcome to add to the end.
I am closing this one.

Cagey, moderator.