I have a situation: sometimes a people from different offices in our company send emails and include a lot of people including my colleague and ask some questions related to my project.
Usually, I answer them, but sometimes my colleague jumps in an gives strong answers but he is not very qualified to do that properly, actually, it is not his job title to answer that type of questions, but, as he knows something, he tries to answer.
Quite often his answers are wrong and I need to find a polite way to correct them. As he still continues to answer questions he is not qualified for, I need to find a way to talk with him politely to ensure that he will get the message and won't do it again.
How would you recommend to structure a discussion and communicate the issue to him in a nice and professional way?