Want to use an email as incoming email address only?

Want to use an email as incoming email address only?

Hi, 

We have set up a team email that we are using for all our team communication - team@x.com but whenever we are making a reply for the emails directed at team@x.xom, in the from section we are able to see 2 options but by default team@x.xom is the one. It creates confusion if someone replies from team@x.com

I am looking for a way where team@x.com can only receive email but the outgoing is not active. Any solution guys?