title: Migrated Wordpress MS to new server, it wont send mail
body: <p>A while ago I moved from Knownhost to Liquidweb, migrated Cpanel / CentOS and my wordpress app (and others) has a hard time letting the PHP Mail engine send mail out from third party domains. However, it is only problematic on my existing multisite install. I have setup a new multisite to see if its a problem with the server itself</p>
  
  <p>The Domain, the DB Names, etc - were all the exact same. So I cannot tell why it will not send mail (php mail function) on behalf of the administrators and third party domains. It attempts to send, it does not fire a log, but somewhere in that config it is blocked.</p>
  
  <p>The same server, on a different account/domain allows mail from 3rd party domains in the phpmail funciton, both share security policies. I am at a complete loss.</p>
  
  <p>Any ideas?</p>