Issue Mails always end up in spam

PhALDan · Sep 4, 2017

hi,

Every mail I send from my Plesk installation ends up in the spam. I have added SPF, DKIM and DMARC to my domain to avoid detection as spam and I have tested these DNS records and the server setup on multiple validator, but my mails still ends up always in the spam. The following example is a mail from Plesk via Roundcube Webmail to Gmail and I have also attached the postfix main.cf. The only strange thing I have seen in the mail header are the "Received: from webmail..." and the "Authentication-Results: meinserverbei..." entries, that contain the IPv6 address from localhost, but I have not found any working solution to avoid these localhost ips.

Ubuntu 16.04.3 LTS‬
Plesk Onyx
Version 17.5.3 Update #20, last updated: Sep 4, 2017 06:26 AM

Email Content:

Code:

Received-SPF: pass (google.com: domain of [email protected] designates 203.0.113.62 as permitted sender) client-ip=203.0.113.62;
Received-SPF: pass (connection is authenticated)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII; format=flowed
Content-Transfer-Encoding: 7bit
Date: Mon, 04 Sep 2017 12:45:19 +0200
From: [email protected]
To: [email protected]
Subject: test1
Message-ID: <[email protected]>
User-Agent: Roundcube Webmail/1.2.5

This is a test-mail!

main.cf:

Code:

myhostname = meinserverbei.example.net
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

# TLS parameters
smtpd_tls_cert_file = /etc/postfix/postfix_default.pem
smtpd_tls_key_file = $smtpd_tls_cert_file
smtpd_use_tls = yes
smtpd_tls_session_cache_database = btree:${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
alias_maps = hash:/etc/aliases, hash:/var/spool/postfix/plesk/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = $mydomain, 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
smtpd_tls_security_level = may
smtp_tls_security_level = may
smtp_use_tls = no
smtpd_timeout = 3600s
smtpd_proxy_timeout = 3600s
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
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
non_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
virtual_mailbox_limit = 0
smtpd_tls_ciphers = medium
smtpd_tls_mandatory_ciphers = medium
tls_medium_cipherlist = HIGH:!aNULL:!MD5
smtpd_tls_mandatory_protocols = TLSv1 TLSv1.1 TLSv1.2
smtpd_tls_protocols = TLSv1 TLSv1.1 TLSv1.2
message_size_limit = 10240000

Issue Mails always end up in spam

PhALDan

New Pleskian

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