Configure os registros mx corretos para o servidor postfix / dovecot

Question

Recentemente, configurei um servidor de correio do postfix / dovecot no meu VPS (OVH), mas, por algum motivo, não consigo receber e-mails por meio dele. Alguém é capaz de verificar meus registros DNS e minha configuração Postfix / dovecot para ver onde estou errado.

Meu domínio é jeroened.be e os e-mails são gerenciados por mail.jeroened.be

Obrigado antecipadamente

DNS:

mail 0 IN CNAME vps115965.ovh.net.
0 IN MX 10 mail
mail 0 IN A 5.196.227.108
mail 0 IN AAAA 2001:41d0:51:1::1e68

Postfix:

[jeroen@vps105180 ~]$ sudo postconf -n
alias_database = $alias_maps
alias_maps = hash:/etc/postfix/aliases
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin ddd $daemon_directory/$process_name $process_id & sleep 5
html_directory = no
inet_interfaces = all
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
message_size_limit = 104857600
mydestination = $myhostname, localhost.$mydomain, localhost
mydomain = jeroened.be
myhostname = mail.jeroened.be
mynetworks = 127.0.0.0/8
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
relay_domains = *
sample_directory = /usr/share/doc/postfix-2.6.6/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
smtpd_relay_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = $mydomain
smtpd_sasl_path = /var/run/dovecot/auth-client
smtpd_sasl_security_options = noanonymous
smtpd_sasl_tls_security_options = $smtpd_sasl_security_options
smtpd_sasl_type = dovecot
smtpd_tls_cert_file = /etc/pki/tls/certs/mail.jeroened.be.crt
smtpd_tls_key_file = /etc/pki/tls/private/mail.jeroened.be.key
smtpd_tls_loglevel = 3
smtpd_tls_received_header = yes
smtpd_tls_session_cache_timeout = 3600s
smtpd_use_tls = yes
tls_random_source = dev:/dev/urandom
unknown_local_recipient_reject_code = 550
virtual_alias_maps = hash:/etc/postfix/vmail_aliases
virtual_gid_maps = static:2223
virtual_mailbox_base = /var/vmail
virtual_mailbox_domains = hash:/etc/postfix/vmail_domains
virtual_mailbox_maps = hash:/etc/postfix/vmail_mailbox
virtual_minimum_uid = 2222
virtual_transport = virtual
virtual_uid_maps = static:2222

Dovecot:

[jeroen@vps105180 ~]$ sudo doveconf -n
# 2.2.10: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-042stab103.6 x86_64 CentOS Linux release 7.0.1406 (Core)  simfs
auth_mechanisms = plain login
default_login_user = vmail
disable_plaintext_auth = no
first_valid_gid = 2222
first_valid_uid = 2222
mail_access_groups = vmail
mail_location = maildir:/var/vmail/%d/%n
passdb {
  args = scheme=SHA1 /etc/dovecot/passwd
  driver = passwd-file
}
protocols = imap pop3
service auth {
  unix_listener auth-client {
    group = postfix
    mode = 0660
    user = postfix
  }
  user = root
}
service imap-login {
  process_min_avail = 1
  user = vmail
}
ssl_cert = </etc/pki/tls/certs/mail.jeroened.be.crt
ssl_key = </etc/pki/tls/private/mail.jeroened.be.key
userdb {
  args = uid=2222 gid=2222 home=/var/vmail/%d/%n allow_all_users=yes
  driver = static
}

Maillog (solicitado):

[jeroen@vps105180 ~]$ sudo tail /var/log/maillog
Feb 20 20:35:00 vps105180 postfix/anvil[16609]: statistics: max connection count 1 for (smtp:unknown) at Feb 20 20:31:40
Feb 20 20:35:00 vps105180 postfix/anvil[16609]: statistics: max cache size 1 at Feb 20 20:31:40
Feb 20 20:43:20 vps105180 postfix/qmgr[15505]: CF1A812217D7: from=<[contact e-mai]>, size=71118, nrcpt=1 (queue active)
Feb 20 20:43:20 vps105180 postfix/virtual[8454]: CF1A812217D7: to=<[my e-mail]@jeroened.be>, relay=virtual, delay=8895, delays=8895/0.07/0/0.03, dsn=4.2.0, status=deferred (delivery failed to mailbox /var/vmail/jeroened.be/[my e-mail]: cannot open file: Is a directory)
Feb 20 20:48:20 vps105180 postfix/qmgr[15505]: 1620712217DD: from=<[contact e-mai]>, size=40090, nrcpt=1 (queue active)
Feb 20 20:48:20 vps105180 postfix/virtual[20307]: 1620712217DD: to=<[my e-mail]@jeroened.be>, relay=virtual, delay=8910, delays=8910/0.12/0/0.03, dsn=4.2.0, status=deferred (delivery failed to mailbox /var/vmail/jeroened.be/[my e-mail]: cannot open file: Is a directory)
Feb 20 20:52:12 vps105180 dovecot: imap-login: Login: user=<[my e-mail]@jeroened.be>, method=PLAIN, rip=178.50.74.180, lip=5.196.227.108, mpid=27858, TLS, session=<doaCY4oPQwCyMkq0>
Feb 20 20:52:14 vps105180 dovecot: imap([my e-mail]@jeroened.be): Connection closed in=1488 out=116410
Feb 20 20:53:20 vps105180 postfix/qmgr[15505]: A773312217DB: from=<[contact e-mai]>, size=13191, nrcpt=1 (queue active)
Feb 20 20:53:20 vps105180 postfix/virtual[29577]: A773312217DB: to=<[my e-mail]@jeroened.be>, relay=virtual, delay=8847, delays=8847/0.08/0/0.03, dsn=4.2.0, status=deferred (delivery failed to mailbox /var/vmail/jeroened.be/[my e-mail]: cannot open file: Is a directory)

pós-fila (solicitada):

[jeroen@vps105180 ~]$ sudo postqueue -p
7322712217DB*    5258 Sat Feb 21 17:47:02  [e-mail hidden]
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EE85F12217EE*   22948 Sun Feb 22 07:25:21  [e-mail hidden]
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C5E4612217E8*    9562 Sat Feb 21 17:26:28  [e-mail hidden]
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6DD8C12217E0*   46645 Sat Feb 21 17:47:02  [e-mail hidden]
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9D13E12217F1*  110258 Sun Feb 22 11:00:18  [e-mail hidden]
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AE11712217DC*    4827 Sat Feb 21 17:29:47  [e-mail hidden]
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AB97312217C2*    4231 Sat Feb 21 17:14:30  [e-mail hidden]
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C04981221808*   18003 Sat Feb 21 17:36:29  [e-mail hidden]
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CB21B12217F4*   78006 Sun Feb 22 11:30:50  [e-mail hidden]
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64FE012217DE*   35693 Sun Feb 22 14:09:28  [e-mail hidden]
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6F91812217FC*    1293 Sat Feb 21 22:15:37  [e-mail hidden]
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EE39312217F8*   20283 Sun Feb 22 11:43:18  [e-mail hidden]
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EB31712217F5*     483 Sun Feb 22 11:37:11  [e-mail hidden]
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81D0512217BD*   14735 Sun Feb 22 04:55:03  [e-mail hidden]
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BB8CC12217E2*    4372 Sun Feb 22 11:42:22  [e-mail hidden]
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9A2B112217EA*    2038 Sun Feb 22 03:00:38  [e-mail hidden]
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7FF1F12217E9*    5258 Sat Feb 21 17:36:47  [e-mail hidden]
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5DF2C12200E8*    2799 Sat Feb 21 17:36:47  [e-mail hidden]
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C27291221805*    4426 Sun Feb 22 16:51:45  [e-mail hidden]
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D9A5912217F6*    7642 Sun Feb 22 11:43:18  [e-mail hidden]
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6A6851221804*     692 Sun Feb 22 16:32:08  [e-mail hidden]
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481F012217E3*    9015 Sat Feb 21 17:26:44  [e-mail hidden]
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CBD1712217B9* 13467594 Sat Feb 21 15:23:52  [e-mail hidden]
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BF0B612217D7*     817 Sun Feb 22 16:56:37  [e-mail hidden]
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B759212217D2*   11127 Sat Feb 21 16:15:24  [e-mail hidden]
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C43241221807*    4327 Sun Feb 22 17:14:35  [e-mail hidden]
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D6D1C12217E4*    9263 Sat Feb 21 17:26:42  [e-mail hidden]
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42AFC12217D8*   30506 Sat Feb 21 18:27:47  [e-mail hidden]
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7100612217ED*    7985 Sat Feb 21 17:06:06  [e-mail hidden]
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B61F612217D4*     667 Sun Feb 22 16:11:19  [e-mail hidden]
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B774912217EF*    4514 Sat Feb 21 17:36:29  [e-mail hidden]
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9FB0D12217F3*  100585 Sun Feb 22 11:20:23  [e-mail hidden]
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8D43212217FD*   21447 Sun Feb 22 13:55:43  [e-mail hidden]
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8B5B712217E5*    9090 Sat Feb 21 17:26:29  [e-mail hidden]
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ED67312217D6*     692 Sun Feb 22 10:43:58  [e-mail hidden]
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C92EC12217D9*   46759 Sat Feb 21 17:36:47  [e-mail hidden]
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A98A412217EB*     263 Sun Feb 22 15:14:36  [e-mail hidden]
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BCAC512217F0*    1293 Sat Feb 21 22:13:05  [e-mail hidden]
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6B92D12217FE*     870 Sun Feb 22 15:31:10  [e-mail hidden]
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B38EC12217E6*   34492 Sun Feb 22 08:07:15  [e-mail hidden]
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CAEC612217D3*    1003 Sat Feb 21 22:24:21  [e-mail hidden]
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7C7911221806*    4579 Sun Feb 22 16:43:19  [e-mail hidden]
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6D5321221800*    4372 Sun Feb 22 13:55:33  [e-mail hidden]
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788D112217E1*    2857 Sun Feb 22 16:33:19  [e-mail hidden]
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1FDAB12217DD*     646 Sun Feb 22 17:08:17  [e-mail hidden]
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A07DD1221809*    3451 Sat Feb 21 15:34:21  MAILER-DAEMON
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BDADB12217EC*    4241 Sat Feb 21 17:13:57  [e-mail hidden]
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C10F412217F9*  141397 Sun Feb 22 12:03:38  [e-mail hidden]
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Answer 1

O problema é resolvido.

Como visto nos comentários, houve um problema dizendo que meus registros não funcionavam. Isso foi resolvido seguindo as instruções de uma pergunta aqui (é a resposta não aprovada com o CentOS 7 em mente)

Depois que os logs funcionaram novamente, a solução ficou a apenas 5 segundos de distância. Os logs estavam dizendo o seguinte erro:

Feb 22 18:15:27 vps105180 postfix/virtual[26358]: fatal: main.cf configuration error: virtual_mailbox_limit is smaller than message_size_limit

Eu sei que tive que mudar essa opção porque eu estou enviando alguns arquivos grandes às vezes (aprox. 20MB) Mas eu não mudei a outra opção desde que eu não tinha conhecimento desse problema. Alterando também essa opção, o problema foi resolvido e meu e-mail veio diretamente.

Agradecimentos especiais a masegaloeh e a todos os outros que me ajudaram a descobrir.

    

Answer 2

Como você insinua que não está recebendo nenhum erro, estou querendo saber se as caixas de correio que você definiu em /etc/postfix/vmail_mailbox não correspondem à estrutura de caixa de correio virtual /var/vmail/%d/%n Dovecot. Por exemplo, eu esperaria que ele contivesse algo como:

[email protected] jeroened.be/leesinblik/

Em qualquer caso, procure no diretório / var / vmail e veja onde o email que você enviou desapareceu.

    

Answer 3

Parece que você está perdendo a última barra quando especificou o diretório maildir em /etc/postfix/vmail_mailbox .

Trecho de man 5 postconf

virtual_mailbox_maps (default: empty)

...

The virtual(8) delivery agent uses this table to look up the per-recipient mailbox or maildir pathname. If the lookup result ends in a slash ("/"), maildir-style delivery is carried out, otherwise the path is assumed to specify a UNIX-style mailbox file. Note that $virtual_mailbox_base is unconditionally prepended to this path.

O fato é: o postfix não falha quando aceita o e-mail, mas falha quando o armazena . É por isso que outro usuário relatou que envia com sucesso um email para o seu servidor.

    

Answer 4

Parece que sua configuração está correta, enviei uma mensagem de teste para você em [email protected], e esta é a resposta do seu servidor:

Feb 22 14:57:22 iabsis postfix/smtp[12704]: DDAE720052E: to=<[email protected]>, relay=mail.jeroened.be[5.196.227.108]:25, delay=6.5, delays=0.33/0.02/6.1/0.03, dsn=5.1.1, status=bounced (host mail.jeroened.be[5.196.227.108] said: 550 5.1.1 <[email protected]>: Recipient address rejected: User unknown in virtual mailbox table (in reply to RCPT TO command))

Isso significa que o seu servidor aceita o e-mail, mas o destinatário não existe (você não tem uma conta de "teste" no seu servidor).