Submission Port - receive_override_options=no_header_body_checks funktioniert nicht

Andreas Wass - Glas Gasperlmair a.wass at glas-gasperlmair.at
Do Sep 9 09:11:25 CEST 2021


Guten Morgen Allerseits,

bin jetzt zumindest  mal soweit, dass Header- und Bodychecks bei Mails 
von extern geprüft und ggf. in die hold-queue gestellt werden und dass 
die Checks bei internen mails nicht zur Anwendung kommen. (genau so soll 
es sein)

Das funktioniert aber nur, wenn ich amavisd für submission port 
deaktiviere (s. master.cf)

Wenn ich für submission port die Zeile *-o 
content_filter=smtp:[127.0.0.1]:10030* aktiviere, dann werden die 
Header- und Bodychecks auch intern angewendet, was ich nicht möchte.
Viren und Spamcheck für interne mails möchte ich aber auch nicht abschalten.

# ==========================================================================
#smtp      inet  n       -       y       -       -       smtpd
# Port 25 - alle extern ankommenden mails per postscreen pruefen
smtp      inet  n       -       y       -       1       postscreen
smtpd     pass  -       -       y       -       -       smtpd
# SASL auf port 25 nicht zulassen (senden nur über submission s. unten)
   -o smtpd_sasl_auth_enable=no
*# extern ankommende Mails per smtpd_proxy_filter an amavis übergeben**
**  -o smtpd_proxy_filter=localhost:10024*
dnsblog   unix  -       -       y       -       0       dnsblog
tlsproxy  unix  -       -       y       -       0       tlsproxy
# Port 587 - Senden von mails nur über diesen Port zulassen
*submission inet n       -       y       -       -       smtpd*
   -o syslog_name=postfix/submission
   -o smtpd_tls_security_level=encrypt
   -o smtpd_sasl_auth_enable=yes
#  -o smtpd_tls_auth_only=yes
   -o receive_override_options=no_header_body_checks
   -o smtpd_reject_unlisted_recipient=no
#  -o smtpd_client_restrictions=$mua_client_restrictions
#  -o smtpd_helo_restrictions=$mua_helo_restrictions
#  -o smtpd_sender_restrictions=$mua_sender_restrictions
   -o smtpd_recipient_restrictions=
   -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
#  -o milter_macro_daemon_name=ORIGINATING
*# zu sendende mails (z.B. Thunderbird) per content_filter an amavis 
übergeben*
*#  -o content_filter=smtp:[127.0.0.1]:10030*
#smtps     inet  n       -       y       -       -       smtpd
#  -o syslog_name=postfix/smtps
#  -o smtpd_tls_wrappermode=yes
#  -o smtpd_sasl_auth_enable=yes
#  -o smtpd_reject_unlisted_recipient=no
#  -o smtpd_client_restrictions=$mua_client_restrictions
#  -o smtpd_helo_restrictions=$mua_helo_restrictions
#  -o smtpd_sender_restrictions=$mua_sender_restrictions
#  -o smtpd_recipient_restrictions=
#  -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
#  -o milter_macro_daemon_name=ORIGINATING
#628       inet  n       -       y       -       -       qmqpd
pickup    unix  n       -       y       60      1       pickup
cleanup   unix  n       -       y       -       0       cleanup
qmgr      unix  n       -       n       300     1       qmgr
#qmgr     unix  n       -       n       300     1       oqmgr
tlsmgr    unix  -       -       y       1000?   1       tlsmgr
rewrite   unix  -       -       y       -       - trivial-rewrite
bounce    unix  -       -       y       -       0       bounce
defer     unix  -       -       y       -       0       bounce
trace     unix  -       -       y       -       0       bounce
verify    unix  -       -       y       -       1       verify
flush     unix  n       -       y       1000?   0       flush
proxymap  unix  -       -       n       -       -       proxymap
proxywrite unix -       -       n       -       1       proxymap
smtp      unix  -       -       y       -       -       smtp
relay     unix  -       -       y       -       -       smtp
         -o syslog_name=postfix/$service_name
#       -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq     unix  n       -       y       -       -       showq
error     unix  -       -       y       -       -       error
retry     unix  -       -       y       -       -       error
discard   unix  -       -       y       -       -       discard
local     unix  -       n       n       -       -       local
virtual   unix  -       n       n       -       -       virtual
lmtp      unix  -       -       y       -       -       lmtp
anvil     unix  -       -       y       -       1       anvil
scache    unix  -       -       y       -       1       scache
postlog   unix-dgram n  -       n       -       1       postlogd
#
# ====================================================================
# Interfaces to non-Postfix software. Be sure to examine the manual
# pages of the non-Postfix software to find out what options it wants.
#
# Many of the following services use the Postfix pipe(8) delivery
# agent.  See the pipe(8) man page for information about ${recipient}
# and other message envelope options.
# ====================================================================
#
# maildrop. See the Postfix MAILDROP_README file for details.
# Also specify in main.cf: maildrop_destination_recipient_limit=1
#
maildrop  unix  -       n       n       -       -       pipe
   flags=DRXhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
#
# ====================================================================
#
# Recent Cyrus versions can use the existing "lmtp" master.cf entry.
#
# Specify in cyrus.conf:
#   lmtp    cmd="lmtpd -a" listen="localhost:lmtp" proto=tcp4
#
# Specify in main.cf one or more of the following:
#  mailbox_transport = lmtp:inet:localhost
#  virtual_transport = lmtp:inet:localhost
#
# ====================================================================
#
# Cyrus 2.1.5 (Amos Gouaux)
# Also specify in main.cf: cyrus_destination_recipient_limit=1
#
#cyrus     unix  -       n       n       -       -       pipe
#  flags=DRX user=cyrus argv=/cyrus/bin/deliver -e -r ${sender} -m 
${extension} ${user}
#
# ====================================================================
# Old example of delivery via Cyrus.
#
#old-cyrus unix  -       n       n       -       -       pipe
#  flags=R user=cyrus argv=/cyrus/bin/deliver -e -m ${extension} ${user}
#
# ====================================================================
#
# See the Postfix UUCP_README file for configuration details.
#
uucp      unix  -       n       n       -       -       pipe
   flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail 
($recipient)
#
# Other external delivery methods.
#
ifmail    unix  -       n       n       -       -       pipe
   flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp     unix  -       n       n       -       -       pipe
   flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender 
$recipient
scalemail-backend unix -       n       n       -       2       pipe
   flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store 
${nexthop} ${user} ${extension}
mailman   unix  -       n       n       -       -       pipe
   flags=FRX user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py 
${nexthop} ${user}
# Rückgabe der untersuchten Mails von amavis an postfix
*localhost:10025     inet  n       -       -       -       - smtpd**
**  -o content_filter=**
**  -o smtpd_proxy_filter=**
**  -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**
**## Folgende Zeile verhindert die checks komplett (zur Zeit)**
**##  -o 
receive_override_options=no_header_body_checks,no_unknown_recipient_checks*

vg, Andi

Am 07.09.2021 um 16:32 schrieb Robert Schetterer:
> Am 07.09.21 um 08:51 schrieb Andreas Wass - Glas Gasperlmair:
>> Hallo Liste,
>>
>> Möchte Header- und Bodychecks für submission port deaktivieren, hab 
>> den receive_override_options=no_header_body_checks brav in die 
>> master.cf wie folgt eingetragen, allerdings funktioniert das nicht.
>
> http://www.postfix.org/FILTER_README.html
>
> NOTE: do not use spaces around the "=" or "," characters
>
> ich hab mich mal daemlich gesucht weil ich da einen whitespace
> hatte, evtl mal checken
>
>
>>
>> Mails mit diversen Keyword werden sowohl an port 25 (wo es ja 
>> berechtigt ist) als auch am submission (wo sie durchgelassen werden 
>> solten) in die HOLD queue gestellt.
>>
>> # 
>> ==========================================================================
>> # service type  private unpriv  chroot  wakeup  maxproc command + args
>> #               (yes)   (yes)   (no)    (never) (100)
>> # 
>> ==========================================================================
>> #smtp      inet  n       -       y       -       -       smtpd
>> # Port 25 - alle extern ankommenden mails per postscreen pruefen
>> smtp      inet  n       -       y       -       1 postscreen
>> smtpd     pass  -       -       y       -       -       smtpd
>> # SASL auf port 25 nicht zulassen (senden nur über submission s. unten)
>>    -o smtpd_sasl_auth_enable=no
>> # extern ankommende Mails per smtpd_proxy_filter an amavis übergeben
>>    -o smtpd_proxy_filter=localhost:10024
>> dnsblog   unix  -       -       y       -       0       dnsblog
>> tlsproxy  unix  -       -       y       -       0       tlsproxy
>> # Port 587 - Senden von mails nur über diesen Port zulassen
>> *submission inet n       -       y       -       -       smtpd**
>> **  -o receive_override_options=no_header_body_checks*
>>    -o syslog_name=postfix/submission
>>    -o smtpd_tls_security_level=encrypt
>>    -o smtpd_sasl_auth_enable=yes
>> #  -o smtpd_tls_auth_only=yes
>>    -o smtpd_reject_unlisted_recipient=no
>> #  -o smtpd_client_restrictions=$mua_client_restrictions
>> #  -o smtpd_helo_restrictions=$mua_helo_restrictions
>> #  -o smtpd_sender_restrictions=$mua_sender_restrictions
>>    -o smtpd_recipient_restrictions=
>>    -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
>> #  -o receive_override_options=no_header_body_checks
>> #  -o milter_macro_daemon_name=ORIGINATING
>> # zu sendende mails (z.B. Thunderbird) per content_filter an amavis 
>> übergeben
>>    -o content_filter=smtp:[127.0.0.1]:10030
>> #smtps     inet  n       -       y       -       -       smtpd
>> #  -o syslog_name=postfix/smtps
>> #  -o smtpd_tls_wrappermode=yes
>> #  -o smtpd_sasl_auth_enable=yes
>> #  -o smtpd_reject_unlisted_recipient=no
>> #  -o smtpd_client_restrictions=$mua_client_restrictions
>> #  -o smtpd_helo_restrictions=$mua_helo_restrictions
>> #  -o smtpd_sender_restrictions=$mua_sender_restrictions
>> #  -o smtpd_recipient_restrictions=
>> #  -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
>> #  -o milter_macro_daemon_name=ORIGINATING
>> #628       inet  n       -       y       -       -       qmqpd
>> pickup    unix  n       -       y       60      1       pickup
>> cleanup   unix  n       -       y       -       0       cleanup
>> qmgr      unix  n       -       n       300     1       qmgr
>> #qmgr     unix  n       -       n       300     1       oqmgr
>> tlsmgr    unix  -       -       y       1000?   1       tlsmgr
>> rewrite   unix  -       -       y       -       - trivial-rewrite
>> bounce    unix  -       -       y       -       0       bounce
>> defer     unix  -       -       y       -       0       bounce
>> trace     unix  -       -       y       -       0       bounce
>> verify    unix  -       -       y       -       1       verify
>> flush     unix  n       -       y       1000?   0       flush
>> proxymap  unix  -       -       n       -       -       proxymap
>> proxywrite unix -       -       n       -       1       proxymap
>> smtp      unix  -       -       y       -       -       smtp
>> relay     unix  -       -       y       -       -       smtp
>>          -o syslog_name=postfix/$service_name
>> #       -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
>> showq     unix  n       -       y       -       -       showq
>> error     unix  -       -       y       -       -       error
>> retry     unix  -       -       y       -       -       error
>> discard   unix  -       -       y       -       -       discard
>> local     unix  -       n       n       -       -       local
>> virtual   unix  -       n       n       -       -       virtual
>> lmtp      unix  -       -       y       -       -       lmtp
>> anvil     unix  -       -       y       -       1       anvil
>> scache    unix  -       -       y       -       1       scache
>> postlog   unix-dgram n  -       n       -       1       postlogd
>> #
>> # ====================================================================
>> # Interfaces to non-Postfix software. Be sure to examine the manual
>> # pages of the non-Postfix software to find out what options it wants.
>> #
>> # Many of the following services use the Postfix pipe(8) delivery
>> # agent.  See the pipe(8) man page for information about ${recipient}
>> # and other message envelope options.
>> # ====================================================================
>> #
>> # maildrop. See the Postfix MAILDROP_README file for details.
>> # Also specify in main.cf: maildrop_destination_recipient_limit=1
>> #
>> maildrop  unix  -       n       n       -       -       pipe
>>    flags=DRXhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
>> #
>> # ====================================================================
>> #
>> # Recent Cyrus versions can use the existing "lmtp" master.cf entry.
>> #
>> # Specify in cyrus.conf:
>> #   lmtp    cmd="lmtpd -a" listen="localhost:lmtp" proto=tcp4
>> #
>> # Specify in main.cf one or more of the following:
>> #  mailbox_transport = lmtp:inet:localhost
>> #  virtual_transport = lmtp:inet:localhost
>> #
>> # ====================================================================
>> #
>> # Cyrus 2.1.5 (Amos Gouaux)
>> # Also specify in main.cf: cyrus_destination_recipient_limit=1
>> #
>> #cyrus     unix  -       n       n       -       -       pipe
>> #  flags=DRX user=cyrus argv=/cyrus/bin/deliver -e -r ${sender} -m 
>> ${extension} ${user}
>> #
>> # ====================================================================
>> # Old example of delivery via Cyrus.
>> #
>> #old-cyrus unix  -       n       n       -       -       pipe
>> #  flags=R user=cyrus argv=/cyrus/bin/deliver -e -m ${extension} ${user}
>> #
>> # ====================================================================
>> #
>> # See the Postfix UUCP_README file for configuration details.
>> #
>> uucp      unix  -       n       n       -       -       pipe
>>    flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail 
>> ($recipient)
>> #
>> # Other external delivery methods.
>> #
>> ifmail    unix  -       n       n       -       -       pipe
>>    flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
>> bsmtp     unix  -       n       n       -       -       pipe
>>    flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop 
>> -f$sender $recipient
>> scalemail-backend unix -       n       n       -       2 pipe
>>    flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store 
>> ${nexthop} ${user} ${extension}
>> mailman   unix  -       n       n       -       -       pipe
>>    flags=FRX user=list 
>> argv=/usr/lib/mailman/bin/postfix-to-mailman.py ${nexthop} ${user}
>> # Rückgabe der untersuchten Mails von amavis an postfix
>> localhost:10025     inet  n       -       -       -       - smtpd
>>    -o content_filter=
>>    -o smtpd_proxy_filter=
>>    -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
>>
>>
>> vg, Andi
>
>

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