Good morning!
I have a bit common problem, but I didn't found any solution yet, after reading really a lot of forums and tutorials. Shortly: I want to send an email from external domain to my server, but it's never recieved.
Server:
VPS with Ubuntu 16.04.
Followed tutorial:
https://www.digitalocean.com/communi...n-ubuntu-16-04
(and a lot of others, after detecting problems, but that one was the main)
What I have / can do:
+ Open port 25 (test passed in
https://www.yougetsignal.com/tools/open-ports/)
+ Port 25 is listening (checked by netstat -plnt, result below)
+ Configured SPF, DKIM, DMARC records (test passed in
https://mxtoolbox.com/)
+ Using TLS (CA - Let’s Encrypt)
+ Send emails to external domains (i.e. gmail.com)
+ Recieve emails sent from internal (i.e. if I'll use mail/sendmail at my VPS to
admin@example.com - I'm recieving this email in home/admin/Maildir)
+ Passing SMTP tests (
https://www.wormly.com/test-smtp-server,
https://www.smtper.net/ - both version passes: with tls / without tls)
What I dont have / can't do:
- Any error logs in mail.log, syslog
- Recieve email from any external domain (i.e. gmail.com)
What I try to do (but I can't):
* Send email from external domain (i.e. gmail.com) and recieve it in my Maildir in example.com domain
Postfix main.cf
Code:
# 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
myhostname = vps_name
mydomain = example.com
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 my_server_ip_address
mydestination = $myhostname, localhost, localhost.$mydomain, $mydomain
# TLS parameters
#smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
#smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_cert_file=/etc/letsencrypt/live/example.com/fullchain.pem
smtpd_tls_key_file=/etc/letsencrypt/live/example.com/privkey.pem
#smtpd_use_tls=yes
smtp_tls_security_level = may
smtpd_tls_security_level = may
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
#smtpd_tls_mandatory_protocols = !SSLv2,!SSLv3
#smtpd_tls_protocols=!SSLv2
# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.
smtpd_sender_restrictions = permit_sasl_authenticated
smtpd_relay_restrictions =
permit_mynetworks
permit_sasl_authenticated
permit_inet_interfaces
reject_unauth_destination
smtpd_recipient_restrictions =
permit_mynetworks
permit_sasl_authenticated
permit_inet_interfaces
reject_unauth_destination
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
relayhost =
mailbox_command =
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all
myorigin = /etc/mailname
milter_protocol = 2
milter_default_action = accept
smtpd_milters = inet:localhost:12301
non_smtpd_milters = inet:localhost:12301
home_mailbox = Maildir/
virtual_alias_maps = hash:/etc/postfix/virtual
Port 25 listening:
Code:
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 32022/master
tcp6 0 0 :::25 :::* LISTEN 32022/master
I spent a lot of hours trying to solve this problem and I failed.
I will be very grateful for any advice what I'm doing wrong and how I can fix the problem.
Postfix - can't recieve emails from external domain (Ubuntu 16.04)
