Properly configure emails on PHP code running on AWS. (Fixed price: £10)

Job ID: 33559975

Budget: £10 – £20 GBP

My website is hosted on AWS and runs on PHP. The emails are sent from the site but I have the followng issues with delivered emails

1. Gmail displays the following message (with butoons for report SPAM).
Be careful with this message
<Company name> Mail could not verify that it actually came from <domain>.com. Avoid clicking links, downloading attachments or replying with personal information.

2. When I click on email header I see a red lock icon with cross on it. The message in the header says:
ec2<ip>.<region>.compute.amazonaws.com did not encrypt this message Learn more". Clicking Learn more, take me to the following page: https://support.google.com/mail/answer/6330403?visit_id=637852259195765648-3260656745&p=tls&hl=en&rd=1

3. For some users the email is delivered to the SPAM folder.

I want freelancer to do the following:
1. Where ever required, change settings to send email as if they come from authentic source.
2. Important: I cannot share any password, therefore freelancer have to work in shared screen.

(Fixed price: £10)
Related categories: PHP Linux Amazon Web Services HTML