Gsuite Email - Why is my SPF is softfail and DMARC fail? - gmail

Question

I am using PHPMailer on GoDaddy to send the email from the GSuite domain email. I did all the configurations according to the Google docs and verified the google._domainkey also,
$mail->IsSMTP();
$mail->CharSet = "UTF-8";
$mail->SMTPDebug = 1;
$mail->Debugoutput = 'html';
$mail->SMTPAuth = false;
$mail->SMTPSecure = 'None';
$mail->Host = "localhost";
$mail->Port = 25;
$mail->Username = "sender#sender.com";
$mail->Password = "********";
$mail->priority = 1;
$mail->addCustomHeader("X-MSMail-Priority: High");
$mail->addCustomHeader("Importance: High");
$mail->addCustomHeader("List-Unsubscribe","<sender#sender.com>");
$mail->addCustomHeader("X-MimeOLE:","Powered by Something.");
$mail->Sender = "sender#sender.com";
$mail->setFrom('sender#sender.com','SENDER NAME');
$mail->addAddress('hello#hello.com','Person');
$mail->Subject = "The subject";
$mail->msgHTML("My email body.");
$mail->IsHTML(true);
$mail->SMTPOptions = array(
'ssl' => array(
'verify_peer' => false,
'verify_peer_name' => false,
'allow_self_signed' => true
)
);
And tested my configurations with the toolbox.googleapps.com which show everything is fine.
✅ Effective SPF Address Ranges.
✅ Domain should have at least 2 NS servers.
✅ Naked domain must be an A record (not CNAME).
✅ Every name server must reply with exactly the same TXT DKIM records.
✅ Every name server must reply with exactly the same TXT DMARC records.
✅ Every name server must reply with exactly the same CNAME records.
✅ Every name server must reply with exactly the same NS records.
✅ Every name server must reply with exactly the same MX records.
✅ Every name server must reply with exactly the same TXT records.
✅ DKIM authentication DNS setup.
✅ Formatting of DMARC policies.
✅ SPF must allow Google servers to send mail on behalf of your domain.
✅ MX lookup must fit in one UDP response packet.
✅ TXT lookup should fit in one UDP response packet.
But when I send the email from PHPMailer and receive, it shows question mark (?) on the profile image and in the show original it says:
SPF: SOFTFAIL with IP ********.
DMARC: 'FAIL'.
And also getting a gray warning which says:
Be careful with this message The sender hasn't authenticated this message so Gmail can't verify that it actually came from them.
I tried all Google & Stack-Overflow solutions but still no luck.