Portál AbcLinuxu, 29. října 2025 06:36
smtpd_banner = $myhostname ESMTP $mail_name (Debian)
# Obecne definice
myhostname = neon.domena.cz
mydomain = domena.cz
myorigin = $mydomain
inet_interfaces = all
mydestination = $myhostname, localhost.$mydomain
mynetworks_style = host
mynetworks = 127.0.0.0/8, "moje_ip_adresy"
alias_maps = hash:/etc/aliases
# velikost zprav
message_size_limit = 40960000
# TLS setup
smtp_enforce_tls = yes
smtpd_enforce_tls = yes
lmtp_use_tls = yes
lmtp_tls_note_starttls_offer = yes
lmtp_tls_security_level = may
lmtp_tls_cert_file = /etc/postfix/ssl/neon.domena.cz.cert
lmtp_tls_key_file = /etc/postfix/ssl/neon.domena.cz.key
lmtp_tls_CAfile = /etc/postfix/ssl/ca.pem
smtp_use_tls = yes
smtp_tls_note_starttls_offer = yes
smtp_tls_security_level = may
smtp_tls_cert_file = /etc/postfix/ssl/neon.domena.cz.cert
smtp_tls_key_file = /etc/postfix/ssl/neon.domena.cz.key
smtp_tls_CAfile = /etc/postfix/ssl/ca.pem
smtpd_use_tls = yes
smtpd_tls_cert_file = /etc/postfix/ssl/neon.domena.cz.cert
smtpd_tls_key_file = /etc/postfix/ssl/neon.domena.cz.key
smtpd_tls_CAfile = /etc/postfix/ssl/ca.pem
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_security_level = may
smtpd_tls_session_cache_timeout = 3600s
smtpd_tls_auth_only = yes
tls_random_source = dev:/dev/urandom
smtpd_tls_session_cache_database = btree:/var/lib/postfix/smtpd_scache
smtp_tls_session_cache_database = btree:/var/lib/postfix/smtp_scache
# SMTP restrikce
unknown_local_recipient_reject_code = 550
smtpd_recipient_restrictions = permit_sasl_authenticated,
reject_non_fqdn_hostname,
reject_non_fqdn_sender,
reject_non_fqdn_recipient,
reject_invalid_hostname,
permit_mynetworks,
reject_unknown_sender_domain,
reject_unknown_recipient_domain,
reject_unauth_destination,
reject_unauth_pipelining,
# Toto kontroluje spam listy
check_client_access hash:/etc/postfix/rbl_override,
reject_rbl_client cbl.abuseat.org,
reject_rbl_client zen.spamhaus.org,
reject_rbl_client bl.spamcop.net,
reject_rbl_client dul.dnsbl.sorbs.net,
reject_rbl_client sbl-xbl.spamhaus.org,
reject_rbl_client rabl.nuclearelephant.com,
reject_rbl_client combined.rbl.msrbl.net,
check_policy_service inet:127.0.0.1:10023
smtpd_sender_restrictions = permit_mynetworks,
reject_non_fqdn_sender,
reject_unknown_address,
reject_unknown_sender_domain,
permit
smtpd_data_restrictions =
reject_unauth_pipelining,
permit
smtpd_helo_restrictions =
permit_mynetworks,
reject_non_fqdn_helo_hostname,
reject_invalid_helo_hostname,
permit
smtpd_helo_required = yes
disable_vrfy_command = yes
smtpd_delay_reject = yes
smtpd_error_sleep_time = 2s
smtpd_soft_error_limit = 20
smtpd_hard_error_limit = 30
# ClamAV setup
content_filter = scan:127.0.0.1:10025
receive_override_options = no_address_mappings
# Mapy
transport_maps = hash:/etc/postfix/transport
A můj 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 content_filter=spamassassin
-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
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
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}
spamassassin unix - n n - - pipe
user=debian-spamd argv=/usr/bin/spamc -f -e /usr/sbin/sendmail -oi -f ${sender} ${recipient}
maildrop unix - n n - - pipe
flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
Je nějaká možnost, jak Postfix donutit k tomu, aby nejdříve vyzkoušel porty 465/587 šifrovaně a teprve pokud by nebyly tyto porty dostupné, tak aby to poslal nešifrovaně přes 25 ?Co je to za blbost. Port 587 není určený ke komunikaci mezi servery, ale pro komunikaci mezi uživatelským programem a serverem, navíc nešifrovaně (či s explicitním navázáním šifrování). Stejnětak lze na portu 25 používat šifrování při explicitní domluvě (STARTTLS). Pokud chceš používat TLS rovnou (nevím, proč bys měl něco takového chtít, ale je k tomu port 465), taky to jde.
Když od toho samého serveru ale příjmám, tak normálně ke STARTTLS dojde a komunikace frčí na 465STARTTLS na 465? To máš něco špatně, ten port je především pro zastaralý software, který STARTTLS neumí.
Predevsim: port 465 je obezlicka pro dementy, co jeste nestihli implementovat pres 15 let (1998) stara RFC (jiz plne podporovana akoro kazdym softem) Na port 465 okamzite zapomen. Ten je pouze pro kreteny ze seznamu apod.A i tak se pokud vím v praxi používá výhradně pro submission.
Detaily strejda googleNení potřeba, poslal jsem už přímé odkazy do dokumentace.
Tiskni
Sdílej:
ISSN 1214-1267, (c) 1999-2007 Stickfish s.r.o.
11.5.2013 23:13