PHPMailer: SMTP Error: Could not connect to SMTP host I've used PHPMailer on several projects but now I'm stuck. It gives me the error:SMTP Error: Could not connect to SMTP host.I've tried sending email from Thunderbird and it works ! But not through PHPMailer ... Here are the settings from Thunderbird: Server name: mail.exampleserver.comPort: 587Username: user@exampleserver.comSecure Authentication: NoConnection Security: STARTTLS I've compared these with the server at my last project where I used PHPMailer and they were: Server name: mail.exampleserver2.comPort: 465Username: user@exampleserver2.comSecure Authentication: