Postfix virtual map escapes some @

Hi,

Sorry if it isn’t related to this thread.

There is one thing I don’t understand. If I restore a virtual server it doesn’t add any user line in
/etc/postfix/virtual. But if I add a new user to this restored server then Virtualmin adds the line:
newuser@domain.tld newuser\@domain.tld

I’m worried. Is this correct? What about the other users in the restored server?

Regards