iredmail httpd default redirecting to domain.com/mail - how to stop
Delete the /var/www/index.html (where there is the redirect advice for the browser) AND clear browser cache/use another browser (I checked it with iPad and found that Chrome used the cache, where there was the page with redirect advice [http 302]).
Okay, after clearing my cache its now working. So the answer is to remove the meta refresh from the head tag of the default index.html file in /var/www/html