I have several different domains on my Parallels Plesk Panel v10.4.4_build1013111102.18 os_CentOS 6 on Linux 2.6.18-028stab099.3VMS, however despite having the same DNS settings on them only one of them (the most recent one added) has a working 'preview' when clicking the preview icon under Websites & Domains. Main Domain = maindomain.com - Actual domain works fine and is live. Preview is broken. Preview Domain = previewdomain.com - Actual domain works fine and is live. Preview is broken. Working Preview Site = workingpreview.com - Actual domain works fine and is live. Preview is working. Broken Preview Site = brokenpreview.com - Actual domain works fine and is live. Preview is broken. If I take the working one and a similar one, both have the same WordPress files installed and both have a correct database set up. Both have similar DNS settings: WORKING Preview resolves to - http://workingpreview.com.188-121-63-239.previewdomain.com/ *.webmail.workingpreview.com. CNAME workingpreview.com. 18.104.22.168 / 24 PTR workingpreview.com. ftp.workingpreview.com. CNAME workingpreview.com. ipv4.workingpreview.com. A 22.214.171.124 mail.workingpreview.com. A 126.96.36.199 workingpreview.com. NS ns1.maindomain.com. workingpreview.com. NS ns2.maindomain.com. workingpreview.com. A 188.8.131.52 workingpreview.com. MX (10) mail.workingpreview.com. workingpreview.com. TXT v=spf1 +a +mx -all webmail.workingpreview.com. A 184.108.40.206 www.workingpreview.com. A 220.127.116.11 BROKEN Preview resolves to - http://brokenpreview.com.188-121-63-239.previewdomain.com/ *.webmail.brokenpreview.com. CNAME brokenpreview.com. 18.104.22.168 / 24 PTR brokenpreview.com. ftp.brokenpreview.com. CNAME brokenpreview.com. ipv4.brokenpreview.com. A 22.214.171.124 mail.brokenpreview.com. A 126.96.36.199 brokenpreview.com. NS ns1.maindomain.com. brokenpreview.com. NS ns2.maindomain.com. brokenpreview.com. A 188.8.131.52 brokenpreview.com. MX (10) mail.brokenpreview.com. brokenpreview.com. TXT v=spf1 +a +mx -all webmail.brokenpreview.com. A 184.108.40.206 www.brokenpreview.com. A 220.127.116.11 Does anyone have any idea what's likely to be wrong with my setup? GoDaddy were useless when I consulted them.