拒绝Office 365中继访问（回复RCPT TO命令）

我已经将后缀configuration为开放中继，以将邮件推送到Office 365 SMTP连接器。 该连接器configuration为静态IP地址authentication，这工作正常。

当我尝试用telnet发送邮件时，Office365弹跳： host smtp.office365.com[40.101.125.210] said: 550 Relay access denied (in reply to RCPT TO command)

我是否需要在O365中设置特殊权限才能允许从连接器发送邮件？ 难道有规则不允许吗？ 我不完全是O365 / Exchange的专家

我还testing了同一个域（mydomain.com）和不同的FROM地址上的其他收件人。 该域在O365在线交换界面中的“接受域”（mydomain.com – authorative）下列出，远程域中只有一个条目（默认* =允许的所有远程域）。

• 后缀警告：主机名不解决地址
• CentOs / Dovecot / Postfix不接收来自外部的电子邮件
• 如何绕过单个域的smtpd_recipient_limit？
• Postfix 451 4.3.5服务器configuration错误
• 更新smtpurl中继

编辑 ：main.cf现在有正确的中继地址（relayhost选项）。 问题依然存在。

这里是我的SMTP中继的更详细的信息：

/var/log/mail.log：

 Jul 20 10:31:11 smtp postfix[4704]: Postfix is running with backwards-compatible default settings Jul 20 10:31:11 smtp postfix[4704]: See http://www.postfix.org/COMPATIBILITY_README.html for details Jul 20 10:31:11 smtp postfix[4704]: To disable backwards compatibility use "postconf compatibility_level=2" and "postfix reload" Jul 20 10:31:12 smtp postfix/master[4741]: daemon started -- version 3.1.0, configuration /etc/postfix Jul 20 10:31:18 smtp postfix/smtpd[4745]: connect from unknown[192.168.1.25] Jul 20 10:31:49 smtp postfix/smtpd[4745]: 04D8E2E061E: client=unknown[192.168.1.25] Jul 20 10:32:05 smtp postfix/cleanup[4749]: 04D8E2E061E: message-id=<20170720083149.04D8E2E061E@smtp> Jul 20 10:32:05 smtp postfix/qmgr[4743]: 04D8E2E061E: from=<[email protected]>, size=328, nrcpt=1 (queue active) Jul 20 10:32:05 smtp postfix/smtp[4750]: 04D8E2E061E: to=<[email protected]>, relay=smtp.office365.com[40.101.125.210]:25, delay=29, delays=29/0.01/0.12/0.01, dsn=5.0.0, status=bounced (host smtp.office365.com[40.101.125.210] said: 550 Relay access denied (in reply to RCPT TO command)) Jul 20 10:32:05 smtp postfix/cleanup[4749]: 641272E0635: message-id=<20170720083205.641272E0635@smtp> Jul 20 10:32:05 smtp postfix/qmgr[4743]: 641272E0635: from=<>, size=2145, nrcpt=1 (queue active) Jul 20 10:32:05 smtp postfix/bounce[4751]: 04D8E2E061E: sender non-delivery notification: 641272E0635 Jul 20 10:32:05 smtp postfix/qmgr[4743]: 04D8E2E061E: removed Jul 20 10:32:05 smtp postfix/smtp[4750]: 641272E0635: to=<[email protected]>, relay=smtp.office365.com[40.101.61.114]:25, delay=0.01, delays=0/0/0/0, dsn=5.0.0, status=bounced (host smtp.office365.com[40.101.61.114] said: 550 Relay access denied (in reply to RCPT TO command)) Jul 20 10:32:05 smtp postfix/qmgr[4743]: 641272E0635: removed Jul 20 10:32:09 smtp postfix/smtpd[4745]: disconnect from unknown[192.168.1.25] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5 

我的telnetinput：

 root@smtp:/etc/postfix# telnet 192.168.1.25 25 Trying 192.168.1.25... Connected to 192.168.1.25. Escape character is '^]'. 220 smtp ESMTP Postfix (Ubuntu) EHLO localhost 250-smtp 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN MAIL FROM: [email protected] 250 2.1.0 Ok RCPT TO: [email protected] 250 2.1.5 Ok DATA 354 End data with <CR><LF>.<CR><LF> Subject: Testmail Test . 250 2.0.0 Ok: queued as 921452E061E QUIT 221 2.0.0 Bye Connection closed by foreign host. 

postconf -n

 alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no inet_interfaces = 192.168.1.25 inet_protocols = ipv4 mailbox_command = procmail -a "$EXTENSION" mailbox_size_limit = 0 mydestination = www.mydomain.com, $myhostname, smtp, localhost.localdomain, localhost myhostname = smtp mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 192.168.1.0/24 myorigin = /etc/mailname #mydomain.com readme_directory = no recipient_delimiter = + relay_domains = static:ALL relay_transport = relay relayhost = smtp.office365.com smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl/sasl_passwd smtp_sasl_security_options = noanonymous smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtp_use_tls = yes smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_use_tls = yes