Internal failure, maybe due to missing functions like proc_open

[Webmaster]

Receive this error while trying to validate a sending server -

I have nothing disabled according to the php info page.
I have all of the fields populated w/ info.
Processed by version 1.6.3
Congratulations! Your server configuration satisfies all requirements by MailWizz EMA.
Any other direction on fixing this issue?

 

[laurentiu]

@Webmaster - this means you're missing some php functions(proc_open and popen), contact your hosting.

 

[Webmaster]

Do you have something specific I can use to check that? I checked for those before I posted here.

This -
$proc=proc_open("echo foo",
array(
array("pipe","r"),
array("pipe","w"),
array("pipe","w")
),
$pipes);
print stream_get_contents($pipes[1]);
Resulted in "foo" on the screen

This -
$handle = popen("/bin/ls", "r");
Resulted in a blank white screen