Jun 1 15:25:44 mail postfix/smtpd[1280]: Anonymous TLS connection established from unknown[219.142.247.90]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
Jun 1 15:25:44 mail postfix/smtpd[1280]: NOQUEUE: reject: RCPT from unknown[219.142.247.90]: 450 4.7.1 <mail.genetronhealth.com>: Helo command rejected: Host not found; from=<dong.ding@genetronhealth.com> to=<bjjw@genewill.cn> proto=ESMTP helo=<mail.genetronhealth.com>
Jun 1 15:25:44 mail postfix/smtpd[1280]: disconnect from unknown[219.142.247.90] ehlo=2 starttls=1 mail=1 rcpt=0/1 quit=1 commands=5/6
# Sender restrictions
smtpd_sender_restrictions =
# reject_unknown_sender_domain
reject_non_fqdn_sender
reject_unlisted_sender
permit_mynetworks
permit_sasl_authenticated
check_sender_access pcre:/etc/postfix/sender_access.pcre
reject_unknown_helo_hostname(解决Host not found问题)
smtpd_helo_restrictions =
permit_mynetworks
permit_sasl_authenticated
check_helo_access pcre:/etc/postfix/helo_access.pcre
# reject_unknown_helo_hostname
1. 无法接收腾讯邮件问题
Jul 20 13:44:55 mail postfix/smtpd[19007]: NOQUEUE: reject: RCPT from out58-246-222-148.mail.qq.com[58.246.222.148]: 554 5.7.1 <out58-246-222-148.mail.qq.com>: Helo command rejected: ACCESS DENIED. Your email was rejected because the sending mail server appears to be on a dynamic IP address that should not be doing direct mail delivery (58-246-222-148); from=<weixinteam@tencent.com> to=<cailicun@genewill.cn> proto=ESMTP helo=<out58-246-222-148.mail.qq.com>
Jul 20 13:44:55 mail postfix/smtpd[19007]: disconnect from out58-246-222-148.mail.qq.com[58.246.222.148] ehlo=2 starttls=1 mail=1 rcpt=0/1 quit=1 commands=5/6