E-mail not going on same server sites using php mail() function

[muzaffar]

I am using cPanel/WHM on 67.213.213.5

There are two domains hosted on the server: netfunda.com & infofacility.com

Email for both domains are hosted on Google with following MX record: ASPMX.L.GOOGLE.COM (Priority - 0)

Always accept mail locally even if the primary mx does not point to this server - Set to false

When I try to send email using PHP mail() function from netfunda.com to infofacility.com, the email goes nowhere.

Please help.

[cPanelDavidG]

I am using cPanel/WHM on 67.213.213.5

There are two domains hosted on the server: netfunda.com & infofacility.com

Email for both domains are hosted on Google with following MX record: ASPMX.L.GOOGLE.COM (Priority - 0)

Always accept mail locally even if the primary mx does not point to this server - Set to false

When I try to send email using PHP mail() function from netfunda.com to infofacility.com, the email goes nowhere.

Please help.

Is PHP running as user nobody?

Additionally, do your mail logs indicate anything about these messages? (/var/log/exim/mainlog, /var/spool/exim/input)