i am new to mailservers and i think i totaly destroyed the config and i have no clue how to fix this mess. For my understanding things are "OK" but i think i'm missing something important.
I replaced IPs with SERVER1 and SERVER2 and the domain with MYDOMAIN.
Setup:
2 Hetzner Server: One for Website (SERVER1 - VPS), another one for mails and other stuff (SERVER2 - Webhosting) The website needs to send smtp mails with PHP and this part is working. But if the user mail is user@MYDOMAIN.com, it wont be delivered and i get the errors:
status=bounced (host mail.MYDOMAIN.com[SERVER2] said: 550 Sender verify failed (in reply to MAIL FROM command))
status=bounced (host mail.MYDOMAIN.com[SERVER2] said: 550 Unroutable address (in reply to RCPT TO command))
I tried so many different things and configurations but neither of them works. Here is where it is at right now.
DNS:
$TTL 7200
@ IN SOA ns1.your-server.de. postmaster.your-server.de. (
2018033101 ; serial
86400 ; refresh
10800 ; retry
3600000 ; expire
86400 ) ; minimum
@ IN NS ns3.second-ns.de.
@ IN NS ns.second-ns.com.
@ IN NS ns1.your-server.de.
@ IN A SERVER1
entwickler IN A SERVER2
mail IN A SERVER2
www IN A SERVER1
autoconfig IN CNAME mail.your-server.de.
ftp IN CNAME www
imap IN CNAME mail
pop IN CNAME mail
relay IN CNAME mail
smtp IN CNAME mail
@ IN MX 10 mail
_autodiscover._tcp IN SRV 0 100 443 mail.your-server.de.
@ IN TXT "v=spf1 +a +mx ?all"
Hostname SERVER1:
hostname -> mail
hostname -f -> mail.MYDOMAIN.com
Postfix config:
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no
append_dot_mydomain = no
readme_directory = no
# TLS parameters
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = mail.MYDOMAIN.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = MYDOMAIN.com, localhost
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all
I am very thankful for any kind of advice and help you guys can give me. I'm trying to learn but mailservers are a real diva...
Let me know if you need some more informations.
UPDATE:
After I changed the origin and destination the error changed to something i already had before:
status=bounced (unknown user: "USER")
Here is the full log:
Apr 5 09:09:19 mail postfix/pickup[29043]: B30A82645F9: uid=33 from=<www-data>
Apr 5 09:09:19 mail postfix/cleanup[29052]: B30A82645F9: message-id=<20180405070919.B30A82645F9@mail.MYDOMAIN.com>
Apr 5 09:09:19 mail postfix/qmgr[29044]: B30A82645F9: from=<www-data@MYDOMAIN.com>, size=426, nrcpt=1 (queue active)
Apr 5 09:09:19 mail postfix/local[29054]: B30A82645F9: to=<USER@MYDOMAIN.com>, relay=local, delay=0.04, delays=0.02/0/0/0.01, dsn=5.1.1, status=bounced (unknown user: "USER")
Apr 5 09:09:19 mail postfix/cleanup[29052]: BAA252645FC: message-id=<20180405070919.BAA252645FC@mail.MYDOMAIN.com>
Apr 5 09:09:19 mail postfix/bounce[29055]: B30A82645F9: sender non-delivery notification: BAA252645FC
Apr 5 09:09:19 mail postfix/qmgr[29044]: BAA252645FC: from=<>, size=2296, nrcpt=1 (queue active)
Apr 5 09:09:19 mail postfix/qmgr[29044]: B30A82645F9: removed
Apr 5 09:09:19 mail postfix/local[29054]: BAA252645FC: to=<www-data@MYDOMAIN.com>, relay=local, delay=0.02, delays=0.01/0/0/0.01, dsn=2.0.0, status=sent (delivered to mailbox)
Apr 5 09:09:19 mail postfix/qmgr[29044]: BAA252645FC: removed
Mails to gmail and so on are still working without errors. I guess he's still trying to attach the mail to the localhost instead passing it over to the mail server?
UPDATE 2:
I now changed mydestination to localhost since this seems to be right? Now the relay is the mailserver but 2 new errors show up:
Apr 5 10:18:45 mail postfix/pickup[29400]: 4BB7F264615: uid=33 from=<www-data>
Apr 5 10:18:45 mail postfix/cleanup[29425]: 4BB7F264615: message-id=<20180405081845.4BB7F264615@mail.MYDOMAIN.com>
Apr 5 10:18:45 mail postfix/qmgr[29401]: 4BB7F264615: from=<www-data@MYDOMAIN.com>, size=426, nrcpt=1 (queue active)
Apr 5 10:18:48 mail postfix/smtp[29426]: 4BB7F264615: to=<USER@MYDOMAIN.com>, relay=mail.MYDOMAIN.com[SERVER2]:25, delay=3.1, delays=0.02/0/3.1/0, dsn=5.0.0, status=bounced (host mail.MYDOMAIN.com[SERVER2] said: 550-Verification failed for <www-data@MYDOMAIN.com> 550-Unrouteable address 550 Sender verify failed (in reply to MAIL FROM command))
Apr 5 10:18:48 mail postfix/cleanup[29425]: 73183264624: message-id=<20180405081848.73183264624@mail.MYDOMAIN.com>
Apr 5 10:18:48 mail postfix/bounce[29438]: 4BB7F264615: sender non-delivery notification: 73183264624
Apr 5 10:18:48 mail postfix/qmgr[29401]: 73183264624: from=<>, size=2611, nrcpt=1 (queue active)
Apr 5 10:18:48 mail postfix/qmgr[29401]: 4BB7F264615: removed
Apr 5 10:18:51 mail postfix/smtp[29426]: 73183264624: to=<www-data@MYDOMAIN.com>, relay=mail.MYDOMAIN.com[SERVER2]:25, delay=3, delays=0.01/0/3/0.02, dsn=5.0.0, status=bounced (host mail.MYDOMAIN.com[SERVER2] said: 550 Unroutable address (in reply to RCPT TO command))
Apr 5 10:18:51 mail postfix/qmgr[29401]: 73183264624: removed
