Your websites may well be okay, nothing wrong with them, all passing the scans as clean, but they're sharing a server with a lot of other websites and too many of those sites have been reported as malicious. If the server's security isn't up to scratch it could be that it's been hacked, which leaves your sites wide open to malware infection at some time in the future.
See http://ip.robtex.com/174.37.254.226.html
Check the status reports for, among others, these sites -
- bricksenterprise(dot)com
- indiannationalism(dot)com
- grankdemo(dot)com
All of them are or were on this server and all of them are still flaggged as malicious.
See the following reports for that server address and you'll get an idea of the problem.
https://www.mywot.com/en/scorecard/174.37.254.226
https://www.virustotal.com/en/ip-address/174.37.254.226/information/
http://urlquery.net/report.php?id=4269402
http://www.ipvoid.com/scan/174.37.254.226
http://www.urlvoid.com/scan/indiagolftours.com/
And here is a list of some of that malware