I'm being taught to use PostFix to make a personal, cross-domain mail service.
I've been stuck on this for a while, but... here's what happens. In this case, the DNS and mail servers, as well as destinations, are the same location. Two virtual machines, connected through a local network, that solve their DIG/nslookup names.
If i try to send to the same domain/machine
Feb 11 12:32:58 mx1 postfix/cleanup[3109]: A94C7C8BF9: message-id=<20190211113258.A94C7C8BF9@mx1.mailantonio.com>
Feb 11 12:32:58 mx1 postfix/qmgr[1176]: A94C7C8BF9: from=<test2@mx1>, size=346, nrcpt=1 (queue active)
Feb 11 12:32:58 mx1 postfix/local[3111]: A94C7C8BF9: to=<test3@mailantonio.com>, relay=local, delay=0.2, delays=0.19/0.01/0/0.01, dsn=2.0.0, status=sent (delivered to mailbox)
Feb 11 12:32:58 mx1 postfix/qmgr[1176]: A94C7C8BF9: removed
Email received, but none shows on their Maildir
When i try to send to the other domain
Feb 11 12:33:32 mx1 postfix/pickup[1175]: 368FDC8BFC: uid=1001 from=<test2@mx1>
Feb 11 12:33:32 mx1 postfix/cleanup[3109]: 368FDC8BFC: message-id=<20190211113332.368FDC8BFC@mx1.mailantonio.com>
Feb 11 12:33:32 mx1 postfix/qmgr[1176]: 368FDC8BFC: from=<test2@mx1>, size=334, nrcpt=1 (queue active)
Feb 11 12:33:32 mx1 postfix/local[3111]: 368FDC8BFC: to=<test@mailgarcia.com>, relay=local, delay=0.13, delays=0.1/0/0/0.03, dsn=5.1.1, status=bounced (unknown user: "test")
Feb 11 12:33:32 mx1 postfix/cleanup[3109]: 4039EC8BFA: message-id=<20190211113332.4039EC8BFA@mx1.mailantonio.com>
Feb 11 12:33:32 mx1 postfix/qmgr[1176]: 4039EC8BFA: from=<>, size=2204, nrcpt=1 (queue active)
Feb 11 12:33:32 mx1 postfix/bounce[3128]: 368FDC8BFC: sender non-delivery notification: 4039EC8BFA
Feb 11 12:33:32 mx1 postfix/qmgr[1176]: 368FDC8BFC: removed
Feb 11 12:33:32 mx1 postfix/smtpd[3131]: connect from localhost[127.0.0.1]
Feb 11 12:33:32 mx1 postfix/smtp[3130]: warning: host mx1[127.0.1.1]:25 greeted me with my own hostname mx1.mailantonio.com
Feb 11 12:33:32 mx1 postfix/smtp[3130]: warning: host mx1[127.0.1.1]:25 replied to HELO/EHLO with my own hostname mx1.mailantonio.com
Feb 11 12:33:32 mx1 postfix/smtp[3130]: 4039EC8BFA: to=<test2@mx1>, relay=mx1[127.0.1.1]:25, delay=0.04, delays=0.01/0.01/0.03/0, dsn=5.4.6, status=bounced (mail for mx1 loops back to myself)
Feb 11 12:33:32 mx1 postfix/qmgr[1176]: 4039EC8BFA: removed
Feb 11 12:33:32 mx1 postfix/smtpd[3131]: disconnect from localhost[127.0.0.1] ehlo=1 quit=1 commands=2
Mail doesn't send, because it gets redirected to its own FQDN?
They're both in the same local network. Machine Mx1 is 10.0.0.1-> mailantonio.com domain. Machine Mx2 is 10.0.0.2-> mailgarcia.com
Here are the postfix config files. Im honestly at a loss and i've been looking for a while at what could be wrong.... MX1
# 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 = mx1.mailantonio.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = $myhostname, localhost.$mydomain, localhost $mydomain, mx2,mailgarcia.com, mailgarcia.com, mx2
relayhost =
mynetworks = 10.0.0.0/24
mailbox_size_limit = 0
recipient_delimiter =
default_transport = smtp
relay_transport = smtp
relay_domains = mailgarcia.com
inet_interfaces = all
inet_protocols = ipv4
MX2
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 = mx2.mailgarcia.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = $mydomain
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain, mx1.mailantonio.com, mailantonio.com, mx1
relayhost =
mynetworks = 10.0.0.0/24
mailbox_size_limit = 0
recipient_delimiter =
default_transport = smtp
relay_transport = smtp
relay_domains = mailantonio.com
inet_interfaces = all
inet_protocols = ipv4
home_mailbox = Maildir/
Maildir directories are made, containing cur, new, and tmp per user... Im using linux mint, which is based on Ubuntu. The configurations should be the same, as far as im aware. Courier IMAP and POP are installed.
Response to answer.
MX1 Config
mydomain = mailantonio.com
myorigin = $mydomain
mydestination = $myhostname, mx1.$mydomain, $mydomain, mx2.mailgarcia.com, mailgarcia.com, mx2
MX2 Config
mydomain = mailgarcia.com
myorigin = $mydomain
mydestination = $myhostname, mx2.$mydomain, $mydomain, mx1.mailantonio.com, mailantonio.com, mx1
Sending it to itself works now. However, cross domain is still iffy.
LOG Postfix
Feb 11 16:03:51 mx1 postfix/smtp[3007]: 6AF41C8BC8: to=<test2@mx1>, relay=none, delay=0.03, delays=0/0.01/0.01/0, dsn=4.4.3, status=deferred (Host or domain name not found. Name service error for name=mx1 type=MX: Host not found, try again)
Sending a message as test3, from machine mx1.mailantonio.com, to test@mailgarcia.com , Do i have to remove the self-referring destinations on configs?
