I have a name like this Domain.com, in my normal e-mail account it will be displayed as plain text but at my mobile it's a link.
Is it possible to disabble it by a tag?
This is the email client adding the link afterwards. Trick is to make it unrecognizable so that it isn't triggered.
This article addresses the issue.
If you are not building a full html email (no style tag), you might be able to get away with adding a zero width space 
in the domain to help break it up. Something like this might work:
http://domain.com