我在 CENTOS 上设置了 Postfix/Dovecot 邮件服务器，我可以使用 webmail 很好地发送和接收电子邮件，我也可以使用 google 设置从服务器中提取电子邮件，但是当我尝试使用来自 google 的电子邮件地址从邮件服务器不是我的 gmail 我收到 554 中继访问被拒绝错误
output of postconf -n
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
config_directory = /etc/postfix
disable_vrfy_command = yes
enable_original_recipient = no
header_checks = regexp:/etc/postfix/header_checks
inet_interfaces = all
local_recipient_maps =
mailbox_size_limit = 0
maximal_backoff_time = 8000s
maximal_queue_lifetime = 7d
minimal_backoff_time = 1000s
mydestination = $mydomain
myhostname = mail.mainewarmers.com
mynetworks = 127.0.0.0/8, <site IP>, [::1]/128, 209.85.216.43
mynetworks_style = host
myorigin = $mydomain
readme_directory = no
recipient_delimiter = +
smtp_helo_timeout = 60s
smtp_tls_note_starttls_offer = yes
smtp_tls_security_level = may
smtpd_banner = $myhostname ESMTP $mail_name
smtpd_client_restrictions = reject_rbl_client sbl.spamhaus.org, reject_rbl_client
blackholes.easynet.nl, reject_rbl_client dnsbl.njabl.org
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_delay_reject = yes
smtpd_hard_error_limit = 12
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks, warn_if_reject reject_non_fqdn_hostname, reject_invalid_hostname, permit
smtpd_recipient_limit = 16
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_sasl_local_domain =
smtpd_sasl_path = private/auth
smtpd_sasl_security_options = noanonymous
smtpd_sasl_type = dovecot
smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks, warn_if_reject reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unauth_pipelining, permit
smtpd_soft_error_limit = 3
smtpd_tls_cert_file = /etc/postfix/cert.pem
smtpd_tls_key_file = /etc/postfix/key.pem
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_security_level = may
smtpd_tls_session_cache_timeout = 3600s
tls_random_source = dev:/dev/urandom
unknown_local_recipient_reject_code = 450
virtual_alias_maps = hash:/etc/postfix/virtual\
telnet 到端口 25 工作得很好， openssl s_client -connect mail.mainewarmers.com:25 -starttls smtp
但是，每当我尝试使用我的谷歌帐户向外部电子邮件地址发送电子邮件时
永久失败的技术细节：Google 试图传递您的消息，但被中继 mail.mainewarmers.com 拒绝了 mail.mainewarmers.com。[54.164.102.132]。
其他服务器返回的错误是：554 5.7.1 : Relay access denied
邮件日志给了我这个
Nov 7 19:54:39 ip-172-31-17-198 postfix/smtpd[5046]: NOQUEUE: reject: RCPT from mail-qg0-f43.google.com[209.85.192.43]: 554 5.7.1 <a@mail>: Relay access denied; from=<bhanscom@mainewarmers.$
Nov 7 19:54:39 ip-172-31-17-198 postfix/smtpd[5046]: disconnect from mail-qg0-f43.google.com[209.85.192.43]
在过去的 5 个小时里，我已经检查了我的 postconf 和设置，我没有发现任何问题，有人能指出我正确的方向吗？非常感谢！