I use our CiviCRM database to send out mailings to members. The mailings contain links to articles on our website. It has worked well for years but now when I press 'Send' the links in the email corrupt and reference a CiviCRM link instead of the website link so recipients can't access it. For a while I didn't notice because of course when I click the link myself in the copy I receive, it opens, and CiviCRM doesn't give an alert or warning.
Any idea what's happening and how I can fix it? (Remember I'm not an expert!)