I'm trying to set up sending emails with SMTP on my VPS running Ubuntu 18.04.
I'm using postfix, nodemailer.
When I send from an [email protected], to a gmail account, it gets stuck in the gmail spam folder. I got a score of 6.8 on www.mail-tester.com, with these deductions:
-1.274 RDNS_NONE Delivered to internal network by a host with no rDNS
This may indicate you do not have a rDNS configured for your hostname or the rDNS does not match your sending IP
-0.896 SPF_HELO_SOFTFAIL SPF: HELO does not match SPF record (softfail)
softfail
Your message is not signed with DKIM
I think my TXT record is correct:
"v=spf1 ip4:[removed-server-ip] include:_spf.mail.hostinger.com ~all"
/etc/postfix/main.cf:
# See /usr/share/postfix/main.cf.dist for a commented, more complete version
# Debian specific: Specifying a file name will cause the first
# line of that file to be used as the name. The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
readme_directory = no
# See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on
# fresh installs.
compatibility_level = 2
# TLS parameters
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = [removed-domain-name].com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = $myhostname, localhost.$mydomain, localhost.[removed-domain-name].com, [removed-domain-name].com, [removed-domain-name]$
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = loopback-only
inet_protocols = all
policyd-spf_time_limit = 3600
smtpd_recipient_restrictions =
permit_mynetworks,
permit_sasl_authenticated,
reject_unauth_destination,
check_policy_service unix:private/policyd-spf
nodemailer method:
"use strict";
const nodemailer = require("nodemailer");
let transporter = nodemailer.createTransport({
sendmail: true,
newline: 'unix',
path: '/usr/sbin/sendmail',
secure: true,
})
let info = await transporter.sendMail({
from: '"[removed-domain-name].com" <no-reply@[removed-domain-name].com>', // sender address
to: req.body.to, // list of receivers
subject: "Hello", // Subject line
text: req.body.message, // plain text body
html: req.body.message, // html body
});
