I have created a new email address for my domain, admin@mydomain, with the Plesk mail interface, but I can't access it. I have tried to open it in the browser by clicking on the little "mail" icon next to the "info" icon, it opens a new window with "webmail.mydomain/..." url, but my browser can't resolve the domain. I have reset my DNS settings the day before, and I do have an entry for webmail.mydomain, so I don't know what to do to make it work.
Thank you for your help !
Who is serve DNS zone of your domain? If DNS zone is served by domain registrar than just add A record "webmail" to zone.