
내 Postfix 서버에서는 465
제출용 포트와 25
릴레이용 포트("릴레이 수신"그리고"릴레이 전송"). 993
메일 "검색"을 위해 Dovecot에 구성된 포트를 사용합니다 .
Postfix를 설정할 때 포트 25
및 465
내부 구성은 /etc/postfix/main.cf
간단하게 유지하지 않았습니다.
smtpd_banner = $myhostname -------> "HELLO!"
biff = no
append_dot_mydomain = no
readme_directory = no
compatibility_level = 2
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = mail.domain.eu
alias_maps = hash:/etc/postfix/aliases
alias_database = hash:/etc/postfix/aliases
myorigin = /etc/mailname
mydestination = $myhostname, tekpi-eu, localhost.localdomain, localhost
relayhost =
mynetworks = 127.0.0.0/8
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all
mydomain = domain.eu
mynetworks_style = host
virtual_mailbox_base = /var/mail/
virtual_mailbox_domains = domain.eu
virtual_mailbox_maps = hash:/etc/postfix/virtual_mailboxes
virtual_gid_maps = static:997
virtual_uid_maps = static:997
virtual_alias_maps = hash:/etc/postfix/virtual_aliases
25
포트 및 포트 465
를 개별적으로 구성하는 것이 더 논리적인 것 같습니다 /etc/postfix/master.cf
.
smtp inet n - y - - smtpd
-o syslog_name=postfix/smtp
-o smtp_use_tls=yes
-o smtp_tls_loglevel=1
-o smtp_tls_security_level=encrypt
-o smtp_tls_wrappermode=yes
# -o smtp_tls_protocols=!SSLv2,!SSLv3,!TLSv1,!TLSv1.1
-o smtp_tls_mandatory_protocols=!SSLv2,!SSLv3,!TLSv1,!TLSv1.1
-o smtp_tls_cert_file=/etc/ssl/certs/server-rsa.cert
-o smtp_tls_key_file=/etc/ssl/private/server-rsa.key
-o smtp_tls_eccert_file=/etc/ssl/certs/server-ecdsa.cert
-o smtp_tls_eckey_file=/etc/ssl/private/server-ecdsa.key
#
-o smtpd_use_tls=yes
-o smtpd_tls_security_level=may
-o smtpd_tls_protocols=!SSLv2,!SSLv3,!TLSv1,!TLSv1.1
-o smtpd_tls_cert_file=/etc/ssl/certs/server-rsa.cert
-o smtpd_tls_key_file=/etc/ssl/private/server-rsa.key
-o smtpd_tls_eccert_file=/etc/ssl/certs/server-ecdsa.cert
-o smtpd_tls_eckey_file=/etc/ssl/private/server-ecdsa.key
-o smtpd_sasl_auth_enable=yes
-o smtpd_sasl_type=dovecot
-o smtpd_sasl_path=smtpd
-o smtpd_sasl_security_options=noanonymous
-o smtpd_client_restrictions=permit_sasl_authenticated,reject
smtps inet n - y - - smtpd
-o syslog_name=postfix/smtps
-o smtpd_use_tls=yes
-o smtpd_tls_wrappermode=yes
-o smtpd_tls_mandatory_protocols=!SSLv2,!SSLv3,!TLSv1,!TLSv1.1
-o smtpd_tls_cert_file=/etc/ssl/certs/server-rsa.cert
-o smtpd_tls_key_file=/etc/ssl/private/server-rsa.key
-o smtpd_tls_eccert_file=/etc/ssl/certs/server-ecdsa.cert
-o smtpd_tls_eckey_file=/etc/ssl/private/server-ecdsa.key
-o smtpd_sasl_auth_enable=yes
-o smtpd_sasl_type=dovecot
-o smtpd_sasl_path=smtpd
-o smtpd_sasl_security_options=noanonymous
-o smtpd_client_restrictions=permit_sasl_authenticated,reject
...
...
...
AFAIK /etc/postfix/master.cf
:
-o smtpd_
구성 으로 시작하는 명령인바운드사이-o smtp_
구성 으로 시작하는 명령배 밖으로사이
또한 -o
아래 줄 이후에 적용으로 시작하는 매개변수는 포트만 수정합니다 25
.
smtp inet n - y - - smtpd
마찬가지로 -o
아래 줄 다음에 Apply로 시작하는 매개변수는 port만 수정합니다 465
.
smtps inet n - y - - smtpd
보시다시피 포트에 필수 TLS를 구성했습니다.25
배 밖으로연결되어 있지만 Gmail로 이메일을 보내면 메시지에 다음과 같은 경고 라벨이 붙습니다."이 메시지는 암호화되지 않았습니다.":
이메일 헤더를 검사해 보면 첫 번째 필드에 암호화 흔적이 없습니다 Received
.
Delivered-To: [email protected]
Received: by 2002:a50:a414:0:0:0:0:0 with SMTP id u20csp5876423edb;
Wed, 23 Dec 2020 10:04:30 -0800 (PST)
X-Google-Smtp-Source: ABdhPJz/H6LVTTELjEg4kyxfY5WvBpShW3zeBpEASR/dmz8FHcT8QBpRbaNbCdGaTON4PTFMXVds
X-Received: by 2002:a05:6402:366:: with SMTP id s6mr25548681edw.44.1608746670340;
Wed, 23 Dec 2020 10:04:30 -0800 (PST)
ARC-Seal: i=1; a=rsa-sha256; t=1608746670; cv=none;
d=google.com; s=arc-20160816;
b=0GELxkiim2MQGGCIrMsuVfXIiuzCbPnx6q6q7Sxuhssnb6XxCc1dtmsdUCVaGorqL/
NWMA9sBfBZkz2ZCb90AoAk4Tyi1YzYw3WVLblw2+xQkbq+JwuYwdAjEQj2i2EJlBI3Zk
KyYC2zfZqMkWMNRL27bI6pYwNtRYM7FifUeKmxaGuGuXv+7KY9wkrv9LTGI3a/UN634r
Mqhog1Em8L8uLys0tDlj9GB08ZO52pPw01vJNU1AXqwOeRVznF9FPwfzP6Pn1drc4cOM
x2vA5NJ+TgguOhqhgTSMW1hQrhNpyku3bYRW9PKQChZdHMowtSotpldYy1sJCf/VYeuA
6fGg==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
h=content-language:content-transfer-encoding:mime-version:user-agent
:date:message-id:subject:from:to;
bh=ZnLGQleFTlvpbWbWBAKrwartxhkzwpbLw0l/ILVPQLo=;
b=Lt/88Ansftfa790xIUJbRfnuHWadZtBq5QHPDlDjJeGLBlmrLiyfIlzG5xwZTkqZmY
XPImCgNHC+JfBDOhTFbiyahI7OMMAJGJAZDrr8K60TCztYqKE4Gkr6SZ7h3nAZVjLE8Y
QBr0NOHZSQkMac/3WKOU86NtPEJwIu53Is71ucdpvNvwj8U5XHDDK9zUw8rcO9XF9JL+
VUXTOhHmpEqhFgZDq+ldLANLkML+Ix/qvAnyb6JSss+rfsJO0h3Q2nh/LSQzbTFeWBbq
oGksWfsCX7L0cfSij1GLWwYJ+1RrT/UBdb9p6OIK7sV2IpzAFmLgdRHoV2XHuB3XYSDy
8gyw==
ARC-Authentication-Results: i=1; mx.google.com;
spf=pass (google.com: domain of [email protected] designates 2a01:4f8:211:2a4::2 as permitted sender) [email protected];
dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=domain.eu
Return-Path: <[email protected]>
Received: from mail.domain.eu ([2a01:4f8:211:2a4::2])
by mx.google.com with ESMTP id j10si12321635ejf.404.2020.12.23.10.04.30
for <[email protected]>;
Wed, 23 Dec 2020 10:04:30 -0800 (PST)
Received-SPF: pass (google.com: domain of [email protected] designates 2a01:4f8:211:2a4::2 as permitted sender) client-ip=2a01:4f8:211:2a4::2;
Authentication-Results: mx.google.com;
spf=pass (google.com: domain of [email protected] designates 2a01:4f8:211:2a4::2 as permitted sender) [email protected];
dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=domain.eu
Received: from [192.168.64.100] (188-230-147-194.dynamic.t-2.net [188.230.147.194])
by mail.domain.eu (Postfix) with ESMTPSA id B486F15A1315
for <[email protected]>; Wed, 23 Dec 2020 19:04:29 +0100 (CET)
To: [email protected]
From: Z L <[email protected]>
Subject: TEST (mandatory TLS): domain --> gmail
Message-ID: <[email protected]>
Date: Wed, 23 Dec 2020 19:04:29 +0100
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101
Thunderbird/78.6.0
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
Content-Language: en-US
CONTENT TEXT
나 자신에게 이메일을 보낼 때도 암호화 흔적이 없습니다. 다음은 이메일 소스의 예입니다.
Return-Path: <[email protected]>
X-Original-To: [email protected]
Delivered-To: [email protected]
Received: from [192.168.64.100] (unknown [188.230.147.194])
by mail.domain.eu (Postfix) with ESMTPSA id 3BE6015A132B
for <[email protected]>; Wed, 23 Dec 2020 23:03:15 +0100 (CET)
To: [email protected]
From: Z L <[email protected]>
Subject: TEST (mandatory TLS): domain --> domain
Message-ID: <[email protected]>
Date: Wed, 23 Dec 2020 23:03:14 +0100
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101
Thunderbird/78.6.0
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
Content-Language: en-US
CONTENT TEXT
필수 TLS는 포트에서 작동합니다 465
. 포트에서 작동하지 않도록 구성을 잘못한 것은 무엇입니까 25
? 필수 TLS 또는 기회주의적 TLS를 사용하도록 이 문제를 해결하려면 어떻게 해야 합니까?25
배 밖으로사이?
답변1
아웃바운드 연결을 구성하는 지시어 는 in 이 아니라 in 에 smtp_
있어야 합니다 . 후자는 인바운드 연결만 다룹니다.main.cf
master.cf