I am unable to send mails from the website using PHP mail function.
If I send the mail from an email to another email on my domain it works fine. However, on sending from the site, the mail is not received. On checking at mail-tester.com I noticed the errors highlighted in red https://prnt.sc/u8thpo
As an example, my domain name can be considered as domain.com
On checking hostname it shows the correct domain name and my fqdn is the same as my domain name.
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