Использование clamsmtpd в качестве before-queue content_filter-а

Цель: реджектить мыло с вирусами после DATA, чтобы отправляющий MTA сам генерировал баунсы отправителю.

master.cf:
# ========================================================================== # service type private unpriv chroot wakeup maxproc command + args # (yes) (yes) (yes) (never) (100) # ========================================================================== # Before-filter SMTP server. Receive mail from the network and # pass it to the content filter on localhost port 10025. smtp inet n - - - - smtpd -o smtpd_proxy_filter=127.0.0.1:10025 -o smtpd_client_connection_count_limit=10 # # After-filter SMTP server. Receive mail from the content filter # on localhost port 10026. # 127.0.0.1:10025 inet n - n - - smtpd -o smtpd_authorized_xforward_hosts=127.0.0.0/8 -o smtpd_client_restrictions= -o smtpd_helo_restrictions= -o smtpd_sender_restrictions= -o smtpd_recipient_restrictions=permit_mynetworks,reject -o smtpd_data_restrictions= -o mynetworks=127.0.0.0/8 -o receive_override_options=no_unknown_recipient_checks,no_header_body_checks

clamsmtpd.conf:
... Action: bounce ...
+ не забыть рестартнуть clamsmtpd и сказать postfix reload
См. так же SMTPD_PROXY_README