Postfix: Difference between revisions

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Latest revision as of 10:13, 3 October 2015

Links

Hints

Maximalgröße 

message_size_limit = 51200000

Mail aus mailq löschen: 

postsuper -d ID

header_checks

Beispiel: 

/^Subject: (.*)$/ REPLACE Subject: [security bulletin] $

Ersetzt alle Subjects mit einem Tag. In der Nachbetrachtung ist das Einbinden von procmail sinnvoller, da flexibler!

DNS manuell umbiegen

#postconf | grep lookup
disable_dns_lookups = no
empty_address_default_transport_maps_lookup_key = <>
empty_address_relayhost_maps_lookup_key = <>
ignore_mx_lookup_error = no
lmtp_host_lookup = native
smtp_host_lookup = native
smtpd_null_access_lookup_key = <>
smtpd_peername_lookup = yes


nano /etc/resolv.conf
nano /etc/hosts

mailq erneut senden

postqueue -f ALL

mailq exportieren

x=`mailq | awk '/MAILER-DAEMON/ {print $1}' |sed s/\!// `
for m in $x;do echo "== $m ==" ;echo; postcat -q $m > $m ; postsuper -d $m; echo ;done

SASL

apt-get install postfix postfix-tls sasl2-bin libsasl2-2 libsasl2-modules

Links

apt-get install postfix postfix-tls sasl2-bin libsasl2-2 libsasl2-modules

#/etc/postfix/sasl/smtpd.conf
pwcheck_method: saslauthd
mech_list: PLAIN LOGIN
saslauthd_path: /var/run/saslauthd/mux
autotransition:true

#/etc/pam.d/smtp
auth required /lib/security/pam_unix_auth.so
account required /lib/security/pam_unix_acct.so
password required /lib/security/pam_unix_passwd.so
session required /lib/security/pam_unix_session.so

#Chroot fixes
mkdir /var/spool/postfix/etc/pam.d
cp -p /etc/pam.d/smtp /var/spool/postfix/etc/pam.d/
mkdir -p /var/spool/postfix/var/run
cd /var/run
mv saslauthd/ /var/spool/postfix/var/run
ln -s /var/spool/postfix/var/run/saslauthd/ saslauthd
#Da es vereinzelt Probleme gab noch sicherheitshalber die Rechte setzten:
chown -R postfix /var/spool/postfix/var/run/saslauthd

#/etc/default/saslauthd
START=yes
MECHANISMS="pam"
#ganz unten
OPTIONS="-m /var/spool/postfix/var/run/saslauthd/mux"

adduser postfix sasl

/etc/init.d/saslauthd restart
/etc/init.d/postfix reload

testsaslauthd -f /var/run/saslauthd/mux -u USER -p PASSWORT
testsaslauthd -f /var/spool/postfix/var/run/saslauthd/mux -u USER -p PASSWORT

main.cf

# See /usr/share/postfix/main.cf.dist for a commented, more complete version


# Debian specific:  Specifying a file name will cause the first
# line of that file to be used as the name.  The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname

smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
biff = no

# appending .domain is the MUA's job.
append_dot_mydomain = no

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h

readme_directory = no

# TLS parameters
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache

# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.

myhostname = <your Hostname>
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
virtual_alias_maps = mysql:/etc/postfix/mysql-aliases.cf
myorigin = /etc/mailname
mydestination = <your Hostname>, localhost
relayhost = 
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_transport = procmail:
procmail_destination_recipient_limit = 1
recipient_delimiter = +
inet_interfaces = all

smtpd_helo_required = yes
disable_vrfy_command = yes
strict_rfc821_envelopes = yes
invalid_hostname_reject_code = 554
multi_recipient_bounce_reject_code = 554
non_fqdn_reject_code = 554
relay_domains_reject_code = 554
unknown_address_reject_code = 554
unknown_client_reject_code = 554
unknown_hostname_reject_code = 554
unknown_local_recipient_reject_code = 554
unknown_relay_recipient_reject_code = 554
unknown_sender_reject_code = 554
unknown_virtual_alias_reject_code = 554
unknown_virtual_mailbox_reject_code = 554
unverified_recipient_reject_code = 554
unverified_sender_reject_code = 554
content_filter = scan:[127.0.0.1]:10025
receive_override_options = no_address_mappings
smtpd_recipient_restrictions =
            permit_sasl_authenticated,
            reject_invalid_hostname,
            reject_unknown_recipient_domain,
            reject_unauth_pipelining,
            permit_mynetworks,
            reject_unauth_destination,
            reject_rbl_client multi.uribl.com,
            reject_rbl_client dsn.rfc-ignorant.org,
            reject_rbl_client dul.dnsbl.sorbs.net,
            reject_rbl_client list.dsbl.org,
            reject_rbl_client sbl-xbl.spamhaus.org,
            reject_rbl_client bl.spamcop.net,
            reject_rbl_client dnsbl.sorbs.net,
            reject_rbl_client cbl.abuseat.org,
            reject_rbl_client ix.dnsbl.manitu.net,
            reject_rbl_client combined.rbl.msrbl.net,
            reject_rbl_client rabl.nuclearelephant.com,
            permit
smtpd_helo_restrictions =
        permit_mynetworks,
        permit_sasl_authenticated
smtpd_sender_restrictions =
        permit_mynetworks,
        permit_sasl_authenticated
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = $myhostname

master.cf

#
# Postfix master process configuration file.  For details on the format
# of the file, see the master(5) manual page (command: "man 5 master").
#
# Do not forget to execute "postfix reload" after editing this file.
#
# ==========================================================================
# service type  private unpriv  chroot  wakeup  maxproc command + args
#               (yes)   (yes)   (yes)   (never) (100)
# ==========================================================================
smtp      inet  n       -       -       -       -       smtpd 
	-o content_filter=spamassassin
#submission inet n       -       -       -       -       smtpd
#  -o smtpd_tls_security_level=encrypt
#  -o smtpd_sasl_auth_enable=yes
#  -o smtpd_client_restrictions=permit_sasl_authenticated,reject
#  -o milter_macro_daemon_name=ORIGINATING
#smtps     inet  n       -       -       -       -       smtpd
#  -o smtpd_tls_wrappermode=yes
#  -o smtpd_sasl_auth_enable=yes
#  -o smtpd_client_restrictions=permit_sasl_authenticated,reject
#  -o milter_macro_daemon_name=ORIGINATING
#628       inet  n       -       -       -       -       qmqpd
pickup    fifo  n       -       -       60      1       pickup
cleanup   unix  n       -       -       -       0       cleanup
qmgr      fifo  n       -       n       300     1       qmgr
#qmgr     fifo  n       -       -       300     1       oqmgr
tlsmgr    unix  -       -       -       1000?   1       tlsmgr
rewrite   unix  -       -       -       -       -       trivial-rewrite
bounce    unix  -       -       -       -       0       bounce
defer     unix  -       -       -       -       0       bounce
trace     unix  -       -       -       -       0       bounce
verify    unix  -       -       -       -       1       verify
flush     unix  n       -       -       1000?   0       flush
proxymap  unix  -       -       n       -       -       proxymap
proxywrite unix -       -       n       -       1       proxymap
smtp      unix  -       -       -       -       -       smtp
# When relaying mail as backup MX, disable fallback_relay to avoid MX loops
relay     unix  -       -       -       -       -       smtp
	-o smtp_fallback_relay=
#       -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq     unix  n       -       -       -       -       showq
error     unix  -       -       -       -       -       error
retry     unix  -       -       -       -       -       error
discard   unix  -       -       -       -       -       discard
local     unix  -       n       n       -       -       local
virtual   unix  -       n       n       -       -       virtual
lmtp      unix  -       -       -       -       -       lmtp
anvil     unix  -       -       -       -       1       anvil
scache    unix  -       -       -       -       1       scache
#
# ====================================================================
# 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=DRhu 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
#  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=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py
  ${nexthop} ${user}
procmail  unix  -       n       n       -       10       pipe
	user=vmail argv=/usr/bin/procmail -a ${user}
# AV scan filter (used by content_filter)
scan      unix  -       -       n       -       16      smtp
        -o smtp_send_xforward_command=yes
# For injecting mail back into postfix from the filter
127.0.0.1:10026 inet  n -       n       -       16      smtpd
        -o content_filter=
        -o receive_override_options=no_unknown_recipient_checks,no_header_body_checks
        -o smtpd_helo_restrictions=
        -o smtpd_client_restrictions=
        -o smtpd_sender_restrictions=
        -o smtpd_recipient_restrictions=permit_mynetworks,reject
        -o mynetworks_style=host
        -o smtpd_authorized_xforward_hosts=127.0.0.0/8
# SPAMASSASIN
spamassassin unix -     n       n       -       -       pipe
        user=postfix argv=/usr/bin/spamc -f -e    
        /usr/sbin/sendmail -oi -f ${sender} ${recipient}
Retrieved from "https://www.tobias-weiss.org/wiki/index.php?title=Postfix&oldid=49"