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I get an issue using SENDMAIL on Ubuntu.
All emails are going into the SPAM folder. I'm using NodeJS and the Nodemailer module.
My code :
var transporter = nodemailer.createTransport({
sendmail: true,
newline: 'unix',
path: '/usr/sbin/sendmail'
});
transporter.sendMail({
from: "[email protected]",
to: "[email protected]",
subject: "test",
html: "test"
});
If you're sending with a gmail address but not through gmail's mail system using proper authentication your mail will be considered a spoofing attempt by many mail servers. Best practices for sending mails from a program:
Otherwise your mails are indistinguishable from typical spams sent via hacked servers using fake sender addresses, and you shouldn't be surprised that they are classified as spam.
Use SMTP authorization. (and check gmail settings - SMTP should be allowed)
If you are sending via sendmail with a gmail address - so letter will be sent from localhost -> recipient mail server is checking DKIM and SPF: failed,failed. -> So this letter 100% comes to spam.
If you are sending via SMTP - you pass thru through authorization with login and password. The letter is being sent from true gmail server.
The second way is more difficult. Configure SPF and DKIM records (make your 'localhost' as legal sender for gmail)
