Hello All,I have a conundrum, I have set osTicket to use SMTP for sending mails, and have an account (xxx@me.com) set up. When I do a test mail, mails from xxx@me.com to other email accounts on me.com e.g (yyy@me.com) delivers successfully, but mails to outside domain (let's use GMAIL as an example) gives the following:Unable to email via php mail function@[deleted] mail() returned failureCan someone explain why the php mail function is still being used even after I have specified in Email--->settings--->Outgoing Email that the Default MTA should be xxx@me.com.Thanks for your help.