我最近在我的VPS（OVH）上设置了一个postfix / dovecot邮件服务器，但由于某种原因，我无法通过它接收电子邮件。 任何人都可以检查我的DNSlogging和我的Postfix / dovecotconfiguration，看看我出错了。
我的域名是jeroened.be，邮件由mail.jeroened.be处理
提前致谢
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 后缀：
[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 = $smtpd_sasl_security_options smtpd_sasl_type = dovecot smtpd_tls_cert_file = /etc/pki/tls/certs/mail.jeroened.be.crt smtpd_tls_key_file = /etc/pki/tls/private/mail.jeroened.be.key smtpd_tls_loglevel = 3 smtpd_tls_received_header = yes smtpd_tls_session_cache_timeout = 3600s smtpd_use_tls = yes tls_random_source = dev:/dev/urandom unknown_local_recipient_reject_code = 550 virtual_alias_maps = hash:/etc/postfix/vmail_aliases virtual_gid_maps = static:2223 virtual_mailbox_base = /var/vmail virtual_mailbox_domains = hash:/etc/postfix/vmail_domains virtual_mailbox_maps = hash:/etc/postfix/vmail_mailbox virtual_minimum_uid = 2222 virtual_transport = virtual virtual_uid_maps = static:2222
达夫科特：
[jeroen@vps105180 ~]$ 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（请求）：
[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)
postqueue（请求）：
[jeroen@vps105180 ~]$ sudo postqueue -p 7322712217DB* 5258 Sat Feb 21 17:47:02 [e-mail hidden] [e-mail hidden] EE85F12217EE* 22948 Sun Feb 22 07:25:21 [e-mail hidden] [e-mail hidden] C5E4612217E8* 9562 Sat Feb 21 17:26:28 [e-mail hidden] [e-mail hidden] 6DD8C12217E0* 46645 Sat Feb 21 17:47:02 [e-mail hidden] [e-mail hidden] 9D13E12217F1* 110258 Sun Feb 22 11:00:18 [e-mail hidden] [e-mail hidden] AE11712217DC* 4827 Sat Feb 21 17:29:47 [e-mail hidden] [e-mail hidden] AB97312217C2* 4231 Sat Feb 21 17:14:30 [e-mail hidden] [e-mail hidden] C04981221808* 18003 Sat Feb 21 17:36:29 [e-mail hidden] [e-mail hidden] CB21B12217F4* 78006 Sun Feb 22 11:30:50 [e-mail hidden] [e-mail hidden] 64FE012217DE* 35693 Sun Feb 22 14:09:28 [e-mail hidden] [e-mail hidden] 6F91812217FC* 1293 Sat Feb 21 22:15:37 [e-mail hidden] [e-mail hidden] EE39312217F8* 20283 Sun Feb 22 11:43:18 [e-mail hidden] [e-mail hidden] EB31712217F5* 483 Sun Feb 22 11:37:11 [e-mail hidden] [e-mail hidden] 81D0512217BD* 14735 Sun Feb 22 04:55:03 [e-mail hidden] [e-mail hidden] BB8CC12217E2* 4372 Sun Feb 22 11:42:22 [e-mail hidden] [e-mail hidden] 9A2B112217EA* 2038 Sun Feb 22 03:00:38 [e-mail hidden] [e-mail hidden] 7FF1F12217E9* 5258 Sat Feb 21 17:36:47 [e-mail hidden] [e-mail hidden] 5DF2C12200E8* 2799 Sat Feb 21 17:36:47 [e-mail hidden] [e-mail hidden] C27291221805* 4426 Sun Feb 22 16:51:45 [e-mail hidden] [e-mail hidden] D9A5912217F6* 7642 Sun Feb 22 11:43:18 [e-mail hidden] [e-mail hidden] 6A6851221804* 692 Sun Feb 22 16:32:08 [e-mail hidden] [e-mail hidden] 481F012217E3* 9015 Sat Feb 21 17:26:44 [e-mail hidden] [e-mail hidden] CBD1712217B9* 13467594 Sat Feb 21 15:23:52 [e-mail hidden] [e-mail hidden] BF0B612217D7* 817 Sun Feb 22 16:56:37 [e-mail hidden] [e-mail hidden] B759212217D2* 11127 Sat Feb 21 16:15:24 [e-mail hidden] [e-mail hidden] C43241221807* 4327 Sun Feb 22 17:14:35 [e-mail hidden] [e-mail hidden] D6D1C12217E4* 9263 Sat Feb 21 17:26:42 [e-mail hidden] [e-mail hidden] 42AFC12217D8* 30506 Sat Feb 21 18:27:47 [e-mail hidden] [e-mail hidden] 7100612217ED* 7985 Sat Feb 21 17:06:06 [e-mail hidden] [e-mail hidden] B61F612217D4* 667 Sun Feb 22 16:11:19 [e-mail hidden] [e-mail hidden] B774912217EF* 4514 Sat Feb 21 17:36:29 [e-mail hidden] [e-mail hidden] 9FB0D12217F3* 100585 Sun Feb 22 11:20:23 [e-mail hidden] [e-mail hidden] 8D43212217FD* 21447 Sun Feb 22 13:55:43 [e-mail hidden] [e-mail hidden] 8B5B712217E5* 9090 Sat Feb 21 17:26:29 [e-mail hidden] [e-mail hidden] ED67312217D6* 692 Sun Feb 22 10:43:58 [e-mail hidden] [e-mail hidden] C92EC12217D9* 46759 Sat Feb 21 17:36:47 [e-mail hidden] [e-mail hidden] A98A412217EB* 263 Sun Feb 22 15:14:36 [e-mail hidden] [e-mail hidden] BCAC512217F0* 1293 Sat Feb 21 22:13:05 [e-mail hidden] [e-mail hidden] 6B92D12217FE* 870 Sun Feb 22 15:31:10 [e-mail hidden] [e-mail hidden] B38EC12217E6* 34492 Sun Feb 22 08:07:15 [e-mail hidden] [e-mail hidden] CAEC612217D3* 1003 Sat Feb 21 22:24:21 [e-mail hidden] [e-mail hidden] 7C7911221806* 4579 Sun Feb 22 16:43:19 [e-mail hidden] [e-mail hidden] 6D5321221800* 4372 Sun Feb 22 13:55:33 [e-mail hidden] [e-mail hidden] 788D112217E1* 2857 Sun Feb 22 16:33:19 [e-mail hidden] [e-mail hidden] 1FDAB12217DD* 646 Sun Feb 22 17:08:17 [e-mail hidden] [e-mail hidden] A07DD1221809* 3451 Sat Feb 21 15:34:21 MAILER-DAEMON [e-mail hidden] BDADB12217EC* 4241 Sat Feb 21 17:13:57 [e-mail hidden] [e-mail hidden] C10F412217F9* 141397 Sun Feb 22 12:03:38 [e-mail hidden] [e-mail hidden]
问题已解决。
正如在评论中看到有一个问题，说我的日志不起作用。 这是根据这里的一个问题的说明（这是CentOS 7的核准答案）
日志再次工作之后，解决scheme在5秒钟之后开始工作。 日志说下面的错误：
Feb 22 18:15:27 vps105180 postfix/virtual[26358]: fatal: main.cf configuration error: virtual_mailbox_limit is smaller than message_size_limit
我知道我必须改变这个选项，因为我有时会发送一些大文件（大约20MB）但是我没有改变另一个选项，因为我没有意识到这个问题。 通过改变这个选项，问题解决了，我的电子邮件正确地进入了。
特别感谢masegaloeh和所有其他人帮我找出答案。
既然你暗示你没有得到任何错误，我想知道你在/etc/postfix/vmail_mailbox设置的邮箱是否与/var/vmail/%d/%n Dovecot虚拟邮箱结构不匹配。 例如，我期望它包含像这样的东西：
[email protected] jeroened.be/leesinblik/
在任何情况下，请查看/ var / vmail目录并查看您发送的邮件已经发送到哪里。
在/etc/postfix/vmail_mailbox指定maildir目录时，看起来像缺less最后一个斜杠 。
摘自男人5 postconf
virtual_mailbox_maps（默认：空）
…
虚拟（8）交付代理使用此表来查找每个收件人邮箱或maildirpath名。 如果查找结果以斜线（“/”）结尾，则执行maildir样式的传递，否则假定该path指定一个UNIX样式的邮箱文件 。 请注意，$ virtual_mailbox_base无条件地添加到此path。
事实是：postfix在接受电子邮件时不会失败，但在存储邮件时失败。 这就是为什么另一个用户报告，他们成功地发送电子邮件到您的服务器。
看起来你的configuration没问题，我在[email protected]发给你一个testing邮件，这是你的服务器的回复：
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))
这意味着您的服务器接受邮件，但收件人不存在（您的服务器上没有“testing”帐户）。