Postfix enviar problema de correio "conexão esgotada"

Question

Eu tenho o Windows 7 máquina local e virtualbox Ubuntu máquina virtual. Eu instalei o Postfix nele e configurei-o, mas quando tento enviar email de teste, recebo o seguinte erro (no arquivo var / log / mail.log):

warning: relayhost configuration problem

6027284D93: [email protected], relay=none, delay=54797, delays=54797/0.22/0.06/0, dsn=4.3.5, status=deferred (Host or domain name not found. Name service error for name=testubu.com type=AAAA: Host not found)

meu arquivo postfix 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 (Ubuntu)
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

# 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.testubu.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
mydomain=testubu.com
myorigin = $mydomain
mydestination = $myhostname, testubu.com, smtp-VirtualBox, localhost.localdomain, localhost,
#relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = ipv4
mail_spool_directory = /var/spool/mail
#proxy_interfaces = 

testubu.com não é domínio real

postfix check

postfix status no errors

Comentei que relayhost e "warning: relayhost configuration problem" foram resolvidos, mas não consigo enviar e-mails. Agora no meu arquivo /var/log/myl.log:

> connect to rilf-cz.mail.protection.outlook.com[213.199.154.202]:25:
> Connection timed out

Quando tentei isso no terminal:

traceroute -p 25 rilf-cz.mail.protection.outlook.com

Eu tenho o seguinte:

traceroute to rilf-cz.mail.protection.outlook.com (213.199.154.202), 64 hops max
  1   10.0.2.2  0,206ms  0,149ms  0,149ms 
  2   10.0.2.2  4,566ms  4,498ms  2,496ms

Parece que nada aconteceu fora da caixa virtual. Eu desativei todos os firewalls Eu mudei o NAT para a ponte. Agora o traceroute parece melhor, mas o problema ainda permanece.

connect to alt2.gmail-smtp-in.l.google.com[74.125.68.27]:25: Connection timed out

Como posso consertar isso?