Emails from postfix going to spam folder in gmail

I am using postfix to send e-mails. My all e-mails are going to gmail spam folders, while I am using proper headers when sending from php mail() function. I have found this is due to dns entries but I have made all the entries i.e spf, dmarc, dkim and I have added my domain name in mx entry.

Can anyone help me out in solving this?

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Hello, @diveshjain25

This could be due to a lot of things. But most likely your IP got blacklisted or just Gmail being too picky about the email.

I usually use this site in such cases:

Just send an email to the email address that you see on the site, and then check your score.

You can also re-send the exact email that was delivered to the SPAM folder - use the same subject, content, signatures and attachments

This would point you to the right direction.

Hope that this helps! Regards, Alex