Posftwd 与 Posftix 和 amavis 一起使用时会重复计算电子邮件

我们的 Postfix 邮件服务器使用带有垃圾邮件刺客的 Amavis 进行垃圾邮件和病毒扫描。我们以某种方式对其进行了设置，postfix 将邮件转发到 amavis 和 amavis，然后将电子邮件重新排队返回 postfix 以将其发送到目的地。我已经用一个简单的规则设置了 postfwd 以在发件人阈值之后拒绝电子邮件，但 Postfwd 重复计算了电子邮件。当我通过 Outlook 作为邮件客户端发送一封电子邮件时，Postfwd 将其计为两封。我是 SMTP 协议的新手，正在努力找出问题所在。如果有人可以请帮忙。我粘贴了一些我认为在下面有用的配置片段。

下面是 postconf -n 的输出

append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
content_filter = amavis:[127.0.0.1]:10024
disable_vrfy_command = yes
dovecot_destination_recipient_limit = 1
enable_original_recipient = no
header_checks = regexp:/etc/postfix/header_checks
inet_interfaces = all
mailbox_size_limit = 0
maximal_backoff_time = 8000s
maximal_queue_lifetime = 7d
minimal_backoff_time = 1000s
mydestination = $myhostname
myhostname = pXXX
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128,XXX
mynetworks_style = host
myorigin = /etc/hostname
readme_directory = no
recipient_delimiter = +
relay_domains = hash:/etc/postfix/relay_recipients
smtp_enforce_tls = no
smtp_helo_timeout = 60s
smtp_tls_note_starttls_offer = yes
smtp_tls_security_level = may
smtp_use_tls = yes
smtpd_banner = $myhostname ESMTP $mail_name
smtpd_client_connection_count_limit = 30
smtpd_client_recipient_rate_limit = 300
smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated, check_client_access hash:/etc/postfix/whitelist, reject_rbl_client sbl.spamhaus.org
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_delay_reject = yes
smtpd_enforce_tls = no
smtpd_hard_error_limit = 12
smtpd_helo_required = yes
smtpd_helo_restrictions = check_client_access hash:/etc/postfix/whitelist, permit_mynetworks, warn_if_reject reject_non_fqdn_hostname, reject_invalid_hostname
smtpd_recipient_limit = 30
smtpd_recipient_restrictions = reject_unauth_pipelining, check_policy_service inet:127.0.0.1:10040, permit_mynetworks, permit_sasl_authenticated, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unauth_destination, check_policy_service inet:127.0.0.1:10023
smtpd_relay_restrictions = permit_mynetworks, check_client_access hash:/etc/postfix/whitelist, check_sender_access hash:/etc/postfix/whitelist, permit_sasl_authenticated, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unauth_destination, check_policy_service inet:127.0.0.1:10023
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_sasl_local_domain =
smtpd_sasl_path = private/auth
smtpd_sasl_type = dovecot
smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/sender_access, permit_sasl_authenticated, permit_mynetworks, reject_unknown_sender_domain, reject_unauth_pipelining, warn_if_reject reject_sender_login_mismatch, warn_if_reject reject_non_fqdn_sender, warn_if_reject reject_unlisted_sender, warn_if_reject reject_non_fqdn_sender
smtpd_soft_error_limit = 3
smtpd_tls_cert_file = XXX
smtpd_tls_key_file = XXX
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_security_level = may
smtpd_tls_session_cache_timeout = 3600s
smtpd_use_tls = yes
tls_random_source = dev:/dev/urandom
transport_maps = hash:/etc/postfix/transport
unknown_local_recipient_reject_code = 450
virtual_alias_maps = proxy:mysql:/etc/postfix/mysql_virtual_alias_maps.cf, proxy:mysql:/etc/postfix/mysql_virtual_alias_domainaliases_maps.cf
virtual_gid_maps = static:125
virtual_mailbox_base = /home/vmail
virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf, proxy:mysql:/etc/postfix/mysql_virtual_mailbox_domainaliases_maps.cf
virtual_transport = dovecot
virtual_uid_maps = static:150

后发规则：

id=20perminute; sender=~/[email protected]/; action=rate(sender/20/60/REJECT only 20 messages per minute for $$sender)

任何人都可以帮助解决这个问题吗？