I'm trying to figure out how to solve a problem on my VPS, maybe you can help me :D
Long story short: this is the first time I operate on a Bare Metal VPS, and I'm trying to setup the mail server.
After a couple of tries I manage to setup the service, but, I can only send emails between the two domains and from this domains to an external mail, but cannot receive. (domain1 and domain2 are managed on the VPS)
- Mail from domain1 to domain2 - OK
- Mail from domain2 to domain1 - OK
- Mail from both theese domains to another mail (e.g. info@blabla.com) - OK
- Mail from external domain (e.g. info@blabla.com) to domain1 or domain2 - 554 5.7.1 Relay access denied
So far I have understood (I think that's it) that there is a problem with the SASL Auth, but I can't figured how to resolve this.
I'm running Ubuntu 22.04, with Plesk (Postfix and Dovecot as mail services), the Relay in the Plesk Mail server settings in set on Auth with SMTP
Attached below the config files (I have not made any changes)
/etc/postfix/main.cf
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 3.6 on
# fresh installs.
compatibility_level = 3.6
# TLS parameters
smtpd_tls_cert_file = /etc/postfix/postfix.pem
smtpd_tls_key_file = $smtpd_tls_cert_file
smtpd_tls_security_level = may
smtp_tls_CApath=/etc/ssl/certs
smtp_tls_security_level = may
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_relay_restrictions = permit_mynetworks, permit_sasl_authenticated, defer_unauth_destination
myhostname = vps-1032f104.vps.ovh.net
alias_maps = hash:/etc/aliases, hash:/var/spool/postfix/plesk/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = localhost.vps.ovh.net, localhost, localhost.localdomain
relayhost =
mynetworks =
mailbox_size_limit = 0
recipient_delimiter =
inet_interfaces = all
inet_protocols = all
virtual_mailbox_domains = $virtual_mailbox_maps, hash:/var/spool/postfix/plesk/virtual_domains
virtual_alias_maps = $virtual_maps, hash:/var/spool/postfix/plesk/virtual
virtual_mailbox_maps = , hash:/var/spool/postfix/plesk/vmailbox
transport_maps = , hash:/var/spool/postfix/plesk/transport
tls_server_sni_maps = hash:/var/spool/postfix/plesk/certs
smtpd_use_tls = yes
smtp_use_tls = no
disable_vrfy_command = yes
smtpd_sender_restrictions = check_sender_access hash:/var/spool/postfix/plesk/blacklists, permit_sasl_authenticated
smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated
authorized_flush_users =
authorized_mailq_users =
smtp_send_xforward_command = yes
smtpd_authorized_xforward_hosts = 127.0.0.0/8 [::1]/128
smtpd_sasl_auth_enable = yes
#smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
virtual_mailbox_base = /var/qmail/mailnames
virtual_uid_maps = static:30
virtual_gid_maps = static:31
smtpd_milters = , inet:127.0.0.1:12768
sender_dependent_default_transport_maps = hash:/var/spool/postfix/plesk/sdd_transport_maps
virtual_transport = plesk_virtual
plesk_virtual_destination_recipient_limit = 1
mailman_destination_recipient_limit = 1
message_size_limit = 10240000
virtual_mailbox_limit = 0
smtputf8_enable = no
recipient_canonical_maps = tcp:127.0.0.1:12346
recipient_canonical_classes = envelope_recipient,header_recipient
tls_preempt_cipherlist = yes
tls_medium_cipherlist = EECDH+AESGCM+AES128:EECDH+AESGCM+AES256:EECDH+CHACHA20:EDH+AESGCM+AES128:EDH+AESGCM+AES256:EDH+CHACHA20:EECDH+SHA256+AES128:EECDH+SHA384+AES256:EDH+SHA256+AES128:EDH+SHA256+AES256:EECDH+SHA1+AES128:EECDH+SHA1+AES256:EDH+SHA1+AES128:EDH+SHA1+AES256:EECDH+HIGH:EDH+HIGH:AESGCM+AES128:AESGCM+AES256:CHACHA20:SHA256+AES128:SHA256+AES256:SHA1+AES128:SHA1+AES256:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!3DES:!MD5:!PSK:!KRB5:!aECDH:!kDH
smtpd_tls_mandatory_ciphers = medium
smtpd_tls_protocols = TLSv1.2 TLSv1.3
smtpd_tls_dh1024_param_file = /opt/psa/etc/dhparams2048.pem
smtpd_tls_mandatory_protocols = TLSv1.2 TLSv1.3
smtpd_tls_ciphers = medium
etc/postfix/master.cf
#
# Postfix master process configuration file. For details on the format
# of the file, see the master(5) manual page (command: "man 5 master" or
# on-line: http://www.postfix.org/master.5.html).
#
# Do not forget to execute "postfix reload" after editing this file.
#
# ==========================================================================
# service type private unpriv chroot wakeup maxproc command + args
# (yes) (yes) (no) (never) (100)
# ==========================================================================
smtp inet n - y - - smtpd
#smtp inet n - y - 1 postscreen
#smtpd pass - - y - - smtpd
#dnsblog unix - - y - 0 dnsblog
#tlsproxy unix - - y - 0 tlsproxy
# Choose one: enable submission for loopback clients only, or for any client.
#127.0.0.1:submission inet n - y - - smtpd
#submission inet n - y - - smtpd
# -o syslog_name=postfix/submission
# -o smtpd_tls_security_level=encrypt
# -o smtpd_sasl_auth_enable=yes
# -o smtpd_tls_auth_only=yes
# -o smtpd_reject_unlisted_recipient=no
# -o smtpd_client_restrictions=$mua_client_restrictions
# -o smtpd_helo_restrictions=$mua_helo_restrictions
# -o smtpd_sender_restrictions=$mua_sender_restrictions
# -o smtpd_recipient_restrictions=
# -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
# Choose one: enable smtps for loopback clients only, or for any client.
#127.0.0.1:smtps inet n - y - - smtpd
#smtps inet n - y - - smtpd
# -o syslog_name=postfix/smtps
# -o smtpd_tls_wrappermode=yes
# -o smtpd_sasl_auth_enable=yes
# -o smtpd_reject_unlisted_recipient=no
# -o smtpd_client_restrictions=$mua_client_restrictions
# -o smtpd_helo_restrictions=$mua_helo_restrictions
# -o smtpd_sender_restrictions=$mua_sender_restrictions
# -o smtpd_recipient_restrictions=
# -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
#628 inet n - y - - qmqpd
cleanup unix n - y - 0 cleanup
#qmgr unix n - n 300 1 oqmgr
tlsmgr unix - - y 1000? 1 tlsmgr
rewrite unix - - y - - trivial-rewrite
bounce unix - - y - 0 bounce
defer unix - - y - 0 bounce
trace unix - - y - 0 bounce
verify unix - - y - 1 verify
flush unix n - y 1000? 0 flush
proxymap unix - - n - - proxymap
proxywrite unix - - n - 1 proxymap
smtp unix - - y - - smtp
relay unix - - y - - smtp
-o syslog_name=postfix/$service_name
# -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq unix n - y - - showq
error unix - - y - - error
retry unix - - y - - error
discard unix - - y - - discard
local unix - n n - - local
virtual unix - n n - - virtual
lmtp unix - - y - - lmtp
anvil unix - - y - 1 anvil
scache unix - - y - 1 scache
postlog unix-dgram n - n - 1 postlogd
#
# ====================================================================
# Interfaces to non-Postfix software. Be sure to examine the manual
# pages of the non-Postfix software to find out what options it wants.
#
# Many of the following services use the Postfix pipe(8) delivery
# agent. See the pipe(8) man page for information about ${recipient}
# and other message envelope options.
# ====================================================================
#
# maildrop. See the Postfix MAILDROP_README file for details.
# Also specify in main.cf: maildrop_destination_recipient_limit=1
#
maildrop unix - n n - - pipe
flags=DRXhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
#
# ====================================================================
#
# Recent Cyrus versions can use the existing "lmtp" master.cf entry.
#
# Specify in cyrus.conf:
# lmtp cmd="lmtpd -a" listen="localhost:lmtp" proto=tcp4
#
# Specify in main.cf one or more of the following:
# mailbox_transport = lmtp:inet:localhost
# virtual_transport = lmtp:inet:localhost
#
# ====================================================================
#
# Cyrus 2.1.5 (Amos Gouaux)
# Also specify in main.cf: cyrus_destination_recipient_limit=1
#
#cyrus unix - n n - - pipe
# flags=DRX user=cyrus argv=/cyrus/bin/deliver -e -r ${sender} -m ${extension} ${user}
#
# ====================================================================
# Old example of delivery via Cyrus.
#
#old-cyrus unix - n n - - pipe
# flags=R user=cyrus argv=/cyrus/bin/deliver -e -m ${extension} ${user}
#
# ====================================================================
#
# See the Postfix UUCP_README file for configuration details.
#
uucp unix - n n - - pipe
flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
#
# Other external delivery methods.
#
ifmail unix - n n - - pipe
flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp unix - n n - - pipe
flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient
scalemail-backend unix - n n - 2 pipe
flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}
mailman unix - n n - - pipe flags=R user=list:list argv=/usr/lib/plesk-9.0/postfix-mailman ${nexthop} ${user} ${recipient}
plesk_virtual unix - n n - - pipe flags=DORhu user=popuser:popuser argv=/usr/lib/plesk-9.0/postfix-local -f ${sender} -d ${recipient} -p /var/qmail/mailnames -q ${queue_id}
127.0.0.1:12346 inet n n n - - spawn user=popuser:popuser argv=/usr/lib/plesk-9.0/postfix-srs
pickup fifo n - y 60 1 pickup
qmgr fifo n - n 1 1 qmgr
smtps inet n - y - - smtpd -o smtpd_tls_wrappermode=yes
submission inet n - y - - smtpd -o smtpd_enforce_tls=yes -o smtpd_tls_security_level=encrypt -o smtpd_sasl_auth_enable=yes -o smtpd_client_restrictions=permit_sasl_authenticated,reject -o smtpd_sender_restrictions= -o smtpd_recipient_restrictions=permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination
plesk_saslauthd unix y y y - 1 plesk_saslauthd status=5 listen=6 dbpath=/plesk/passwd.db
plesk-51.83.43.67- unix - - n - - smtp -o smtp_bind_address=51.83.43.67 -o smtp_bind_address6= -o smtp_address_preference=ipv4
/var/log/maillog (for the last test mail I just send)
Sep 8 11:21:48 vps-1032f104 postfix/smtpd[1535575]: warning: hostname annoying.medyamol.com does not resolve to address 141.98.11.113: Name or service not known
Sep 8 11:21:48 vps-1032f104 postfix/smtpd[1535575]: connect from unknown[141.98.11.113]
Sep 8 11:21:49 vps-1032f104 plesk_saslauthd[1535682]: listen=6, status=5, dbpath='/plesk/passwd.db', keypath='/plesk/passwd_db_key', chroot=1, unprivileged=1
Sep 8 11:21:49 vps-1032f104 plesk_saslauthd[1535682]: privileges set to (113:122) (effective 113:122)
Sep 8 11:21:49 vps-1032f104 plesk_saslauthd[1535682]: failed mail authentication attempt for user 'admin' (password len=11)
Sep 8 11:21:49 vps-1032f104 postfix/smtpd[1535575]: warning: unknown[141.98.11.113]: SASL LOGIN authentication failed: authentication failure
Sep 8 11:21:50 vps-1032f104 postfix/smtpd[1535575]: disconnect from unknown[141.98.11.113] ehlo=1 auth=0/1 quit=1 commands=2/3
postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases, hash:/var/spool/postfix/plesk/aliases
append_dot_mydomain = no
authorized_flush_users =
authorized_mailq_users =
biff = no
compatibility_level = 3.6
disable_vrfy_command = yes
inet_interfaces = all
inet_protocols = all
mailbox_size_limit = 0
mailman_destination_recipient_limit = 1
message_size_limit = 10240000
mydestination = localhost.vps.ovh.net, localhost, localhost.localdomain
myhostname = vps-1032f104.vps.ovh.net
mynetworks =
myorigin = /etc/mailname
plesk_virtual_destination_recipient_limit = 1
readme_directory = no
recipient_canonical_classes = envelope_recipient,header_recipient
recipient_canonical_maps = tcp:127.0.0.1:12346
recipient_delimiter =
relayhost =
sender_dependent_default_transport_maps = hash:/var/spool/postfix/plesk/sdd_transport_maps
smtp_send_xforward_command = yes
smtp_tls_CApath = /etc/ssl/certs
smtp_tls_security_level = may
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtp_use_tls = no
smtpd_authorized_xforward_hosts = 127.0.0.0/8 [::1]/128
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated
smtpd_milters = , inet:127.0.0.1:12768
smtpd_relay_restrictions = permit_mynetworks, permit_sasl_authenticated, defer_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sender_restrictions = check_sender_access hash:/var/spool/postfix/plesk/blacklists, permit_sasl_authenticated
smtpd_tls_cert_file = /etc/postfix/postfix.pem
smtpd_tls_ciphers = medium
smtpd_tls_dh1024_param_file = /opt/psa/etc/dhparams2048.pem
smtpd_tls_key_file = $smtpd_tls_cert_file
smtpd_tls_mandatory_ciphers = medium
smtpd_tls_mandatory_protocols = TLSv1.2 TLSv1.3
smtpd_tls_protocols = TLSv1.2 TLSv1.3
smtpd_tls_security_level = may
smtpd_use_tls = yes
smtputf8_enable = no
tls_medium_cipherlist = EECDH+AESGCM+AES128:EECDH+AESGCM+AES256:EECDH+CHACHA20:EDH+AESGCM+AES128:EDH+AESGCM+AES256:EDH+CHACHA20:EECDH+SHA256+AES128:EECDH+SHA384+AES256:EDH+SHA256+AES128:EDH+SHA256+AES256:EECDH+SHA1+AES128:EECDH+SHA1+AES256:EDH+SHA1+AES128:EDH+SHA1+AES256:EECDH+HIGH:EDH+HIGH:AESGCM+AES128:AESGCM+AES256:CHACHA20:SHA256+AES128:SHA256+AES256:SHA1+AES128:SHA1+AES256:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!3DES:!MD5:!PSK:!KRB5:!aECDH:!kDH
tls_preempt_cipherlist = yes
tls_server_sni_maps = hash:/var/spool/postfix/plesk/certs
transport_maps = , hash:/var/spool/postfix/plesk/transport
virtual_alias_maps = $virtual_maps, hash:/var/spool/postfix/plesk/virtual
virtual_gid_maps = static:31
virtual_mailbox_base = /var/qmail/mailnames
virtual_mailbox_domains = $virtual_mailbox_maps, hash:/var/spool/postfix/plesk/virtual_domains
virtual_mailbox_limit = 0
virtual_mailbox_maps = , hash:/var/spool/postfix/plesk/vmailbox
virtual_transport = plesk_virtual
virtual_uid_maps = static:30
Sasl Status
● saslauthd.service - LSB: saslauthd startup script
Loaded: loaded (/etc/init.d/saslauthd; generated)
Active: active (exited) since Thu 2022-09-08 09:35:31 UTC; 1h 42min ago
Docs: man:systemd-sysv-generator(8)
CPU: 23ms
Sep 08 09:35:31 vps-1032f104 systemd[1]: Starting LSB: saslauthd startup script>
Sep 08 09:35:31 vps-1032f104 saslauthd[1530583]: * To enable saslauthd, edit />
Sep 08 09:35:31 vps-1032f104 systemd[1]: Started LSB: saslauthd startup script.
Are theese configs correct?
I'm just a Front End Dev thrown into the world of servers, help me with this struggle please :D
Thank's!
---- Update ----
postconf -d | grep restrictions give me this result:
proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $smtpd_sender_login_maps $sender_bcc_maps $recipient_bcc_maps $smtp_generic_maps $lmtp_generic_maps $alias_maps $smtpd_client_restrictions $smtpd_helo_restrictions $smtpd_sender_restrictions $smtpd_relay_restrictions $smtpd_recipient_restrictions $address_verify_sender_dependent_default_transport_maps $address_verify_sender_dependent_relayhost_maps $address_verify_transport_maps $fallback_transport_maps $lmtp_discard_lhlo_keyword_address_maps $lmtp_pix_workaround_maps $lmtp_sasl_password_maps $lmtp_tls_policy_maps $mailbox_command_maps $mailbox_transport_maps $postscreen_discard_ehlo_keyword_address_maps $rbl_reply_maps $sender_dependent_default_transport_maps $sender_dependent_relayhost_maps $smtp_discard_ehlo_keyword_address_maps $smtp_pix_workaround_maps $smtp_sasl_password_maps $smtp_tls_policy_maps $smtpd_discard_ehlo_keyword_address_maps $smtpd_milter_maps $virtual_gid_maps $virtual_uid_maps $local_login_sender_maps $postscreen_reject_footer_maps $smtpd_reject_footer_maps $tls_server_sni_maps
smtpd_client_restrictions =
smtpd_data_restrictions =
smtpd_end_of_data_restrictions =
smtpd_etrn_restrictions =
smtpd_helo_restrictions =
smtpd_recipient_restrictions =
smtpd_relay_before_recipient_restrictions = ${{$compatibility_level} <level {3.6} ? {no} : {yes}}
smtpd_relay_restrictions = ${{$compatibility_level} <level {1} ? {} : {permit_mynetworks, permit_sasl_authenticated, defer_unauth_destination}}
smtpd_sender_restrictions =
Is it possible that some other directives override the restrictions protocols?
