There is new version of LiteSpeed and LiteSpeed PHP LSAPI. So you went ahead to upgrade LiteSpeed in LiteSpeed admin Panel or LiteSpeed plugins page in WHM. The process is rather fast but you may see that LiteSpeed PHP LSAPI my not upgraded to the latest version.
To solve this problem you need to rebuild PHP with LSAPI.
To do this login to WHM and follow the path below.
WHM → LiteSpeed Web Server → Build Matching PHP Binary → Tick Confirmation Check box → Click Next
The process may take a few minutes. By the time it is done, you should have the latest version of LiteSpeed PHP LSAPI.
IMPORTANT: Do not ignore this email.
Your hostname (yourhostname.com) could not be resolved to an IP
address. This means that /etc/hosts is not set up correctly, and/or
there is no dns entry for yourhostname.com. Please be sure that the
contents of /etc/hosts are configured correctly, and also that
there is a correct 'A' entry for the domain in the zone file.
Some or all of these problems can be caused by /etc/resolv.conf
being setup incorrectly. Please check that file if you believe
everything else is correct.
You may be able to automatically correct this problem by using the
'Add an A entry for your hostname' option under 'Dns Functions' in
your Web Host Manager.
If you are using cPanel/WHM & getting this email everyday, it means that your IP configuration is not done correctly. But maybe some of you purposely done this due to security reason. Due to this, you may not want to receive this email everyday.
To disable this login to WHM. Go to
Server Contacts → Alert Priority Assignment → IP Address DNS Check → Set Priority to Disabled → Save