postfix interfaces duplas, porta isp1 25 bloqueada, rápida, porta isp2 aberta, mas lenta

0

Ciao! Como você está?

Problema:
Eu preciso de 2 interfaces, porque o rápido ISP bloqueia 25 portas, o mais lento está aberto.

Eu posso fazer telnet com a interface necessária:

telnet -b 192.168.81.20 alt2.gmail-smtp-in.l.google.com 25  

Trying 74.125.68.27...
Connected to alt2.gmail-smtp-in.l.google.com.
Escape character is '^]'.
220 mx.google.com ESMTP q14si1562820plk.485 - gsmtp

O erro não está funcionando

telnet -b 192.168.78.20 alt2.gmail-smtp-in.l.google.com 25 

Trying 74.125.68.27...
telnet: Unable to connect to remote host: Connection refused
root@server:/etc/postfix# 

Eu tenho as configurações corretas (smtp_bind_address, o que eu preciso e funciona com o telnet):

​smtp      inet  n       -       y       -       -       smtpd
  -o content_filter=spamassassin
​​  -o smtp_bind_address=192.168.81.1

submission inet n       -       y       -       -       smtpd
  -o syslog_name=postfix/submission
  -o smtpd_tls_security_level=encrypt
  -o smtpd_sasl_auth_enable=yes
  -o smtpd_client_restrictions=permit_sasl_authenticated,reject
​​  -o smtp_bind_address=192.168.81.1
smtps     inet  n       -       y       -       -       smtpd
  -o syslog_name=postfix/smtps
  -o smtpd_tls_wrappermode=yes
  -o smtpd_sasl_auth_enable=yes
  -o smtpd_client_restrictions=permit_sasl_authenticated,reject
​​  -o smtp_bind_address=192.168.81.1

Ainda assim, recebo este erro:

Jun 07 13:19:04 server postfix/smtp[10823]: connect to alt1.gmail-smtp-in.l.google.com[108.177.14.27]:25: Connection refused
Jun 07 13:19:04 server postfix/smtp[10823]: connect to alt1.gmail-smtp-in.l.google.com[2a00:1450:4010:c0f::1b]:25: Network is unreachable
Jun 07 13:19:05 server postfix/smtp[10823]: connect to alt2.gmail-smtp-in.l.google.com[74.125.68.27]:25: Connection refused
Jun 07 13:19:05 server postfix/smtp[10823]: C625334017A: to=<[email protected]>, relay=none, delay=12983, delays=12976/0.01/7.4/0, dsn=4.4.1, status=deferred (connect to alt2.gmail-smtp-in.l.google.com[74.125.68.27]:25: Connection refused)
​

As configurações estão corretas, por que recebo conexão recusada?
Se você sabe, muito obrigado!
Ciao!

Mais:

Roteamento:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.78.1    0.0.0.0         UG    10     0        0 enp2s0
0.0.0.0         192.168.81.1    0.0.0.0         UG    30     0        0 enp1s0
192.168.78.0    0.0.0.0         255.255.255.0   U     0      0        0 enp2s0
192.168.81.0    0.0.0.0         255.255.255.0   U     0      0        0 enp1s0

Ifconfig:

enp1s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.81.20  netmask 255.255.255.0  broadcast 192.168.81.255
        inet6 fe80::9ade:d0ff:fe04:23c3  prefixlen 64  scopeid 0x20<link>
        ether 98:de:d0:04:23:c3  txqueuelen 1000  (Ethernet)
        RX packets 265  bytes 49826 (48.6 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 104  bytes 25251 (24.6 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

enp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.78.20  netmask 255.255.255.0  broadcast 192.168.78.255
        inet6 fe80::eeaa:a0ff:fe1b:4d84  prefixlen 64  scopeid 0x20<link>
        ether ec:aa:a0:1b:4d:84  txqueuelen 1000  (Ethernet)
        RX packets 4733  bytes 850839 (830.8 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 4911  bytes 934827 (912.9 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1  (Local Loopback)
        RX packets 8049  bytes 3219724 (3.0 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 8049  bytes 3219724 (3.0 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

my.conf

# 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 = ESMTP mail.patrikx3.tk
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

# See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on
# fresh installs.
compatibility_level = 2

# 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

smtpd_tls_cert_file= /etc/ssl/acme/patrikx3.tk/fullchain.cer
smtpd_tls_key_file=/etc/ssl/acme/patrikx3.tk/patrikx3.tk.key
smtpd_use_tls=yes
smtpd_tls_auth_only = yes

smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_auth_enable = yes

smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination, check_policy_service unix:private/policyd-spf

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

#smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination

myhostname = mail.patrikx3.tk
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = localhost
relayhost = 
mynetworks = 127.0.0.0/8
# 5 gigabyt
mailbox_size_limit = 5368709120
# 50 megabyte
message_size_limit = 52428800
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all
virtual_transport = lmtp:unix:private/dovecot-lmtp
virtual_mailbox_domains = mysql:/etc/postfix/mysql-virtual-mailbox-domains.cf
virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual-mailbox-maps.cf
virtual_alias_maps = mysql:/etc/postfix/mysql-virtual-alias-maps.cf

# spf
policyd-spf_time_limit = 3600

#opendkim
smtpd_milters = inet:127.0.0.1:8891
non_smtpd_milters = $smtpd_milters
milter_default_action = accept
milter_protocol = 2

A interface necessária também tem rota:

iface enp1s0 inet dhcp 
        metric 30 
        post-up ip route add 192.168.81.0/24 dev enp1s0 src 192.168.81.20 table rt2 
        post-up ip route add default via 192.168.81.1 dev enp1s0 table rt2 
        post-up ip rule add from 192.168.81.20/32 table rt2 
        post-up ip rule add to 192.168.81.20/32 table rt2
    
por Patrik Laszlo 07.06.2017 / 13:45

1 resposta

1

Na verdade, o problema era que eu era o settings para as configurações de listening, então ao invés de master.cf, eu tinha que adicioná-lo no master.cf assim:

smtp_bind_address=192.168.81.20

E é isso, perfeito e funciona o tempo todo !!!! :) Tão simples! A listagem de e-mail do Postfix ajudou-me!

    
por 07.06.2017 / 19:06