Good morning!
I have a bit common problem, but I haven'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 [email protected] - 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 don't 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
# 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:
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 32022/master tcp6 0 0 :::25 :::* LISTEN 32022/master Additional info
When I'll try to send email to my domain, I have non-delivery message:
Remote host said: 454 4.7.1 <admin@my_domain>: Relay access denied If I'll use mxtoolbox - 'test email server', the response is:
Connecting to MY_VPS_IP 220 VPS_NAME ESMTP Postfix (Ubuntu) [1126 ms] EHLO keeper-us-east-1b.mxtoolbox.com 250-VPS_NAME 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN [705 ms] MAIL FROM:<[email protected]> 250 2.1.0 Ok [687 ms] RCPT TO:<[email protected]> 554 5.7.1 <[email protected]>: Relay access denied [690 ms] LookupServer 8529ms 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.
