这里需要一些 TLC。我正在按照此处的教程构建此 postfix/dovecot/clamav 邮件服务器：https://www.exratione.com/2014/05/a-mailserver-on-ubuntu-1404-postfix-dovecot-mysql/
我遇到了这个问题，花了很多时间却没有任何结果。邮件客户端可以正常访问此服务器，可以正常发送电子邮件，但是它不会接收/直接拒绝任何来自外部的入站电子邮件。
mail.log 中的错误消息是：
Oct 7 12:52:19 mail postfix/smtpd[7612]: NOQUEUE: reject: RCPT from mail-la0-f49.google.com[209.85.215.49]: 554 5.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<mail-la0-f49.google.com>
这是我的 postconf -n 结果：
append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
config_directory = /etc/postfix
content_filter = amavis:[127.0.0.1]:10024
disable_vrfy_command = yes
dovecot_destination_recipient_limit = 1
enable_original_recipient = no
header_checks = regexp:/etc/postfix/header_checks
inet_interfaces = all
mailbox_size_limit = 0
maximal_backoff_time = 8000s
maximal_queue_lifetime = 7d
minimal_backoff_time = 1000s
mydestination =
myhostname = mail.ncullc.com
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mynetworks_style = host
myorigin = /etc/hostname
readme_directory = no
recipient_delimiter = +
smtp_helo_timeout = 60s
smtp_tls_note_starttls_offer = yes
smtp_tls_security_level = may
smtpd_banner = $myhostname ESMTP $mail_name
smtpd_client_restrictions = reject_rbl_client sbl.spamhaus.org, reject_rbl_client blackholes.easynet.nl, reject_rbl_client dnsbl.njabl.org
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_delay_reject = yes
smtpd_hard_error_limit = 12
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks, warn_if_reject reject_non_fqdn_hostname, reject_invalid_hostname, permit
smtpd_recipient_limit = 16
smtpd_relay_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, permit
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_sasl_local_domain =
smtpd_sasl_path = private/auth
smtpd_sasl_security_options = noanonymous
smtpd_sasl_type = dovecot
smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks, warn_if_reject reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unauth_pipelining, permit
smtpd_soft_error_limit = 3
smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_security_level = may
smtpd_tls_session_cache_timeout = 3600s
tls_random_source = dev:/dev/urandom
unknown_local_recipient_reject_code = 450
virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf, mysql:/etc/postfix/mysql_virtual_alias_domainaliases_maps.cf
virtual_gid_maps = static:8
virtual_mailbox_base = /var/vmail
virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf, mysql:/etc/postfix/mysql_virtual_mailbox_domainaliases_maps.cf
virtual_transport = dovecot
virtual_uid_maps = static:150
这是我的 dovecot -n 结果：
# 2.2.9: /etc/dovecot/dovecot.conf
# OS: Linux 3.13.0-36-generic x86_64 Ubuntu 14.04.1 LTS ext3
auth_mechanisms = plain login
first_valid_uid = 150
last_valid_uid = 150
mail_gid = mail
mail_location = maildir:/var/vmail/%d/%n
mail_uid = vmail
namespace inbox {
inbox = yes
location =
mailbox Drafts {
special_use = \Drafts
}
mailbox Junk {
special_use = \Junk
}
mailbox Sent {
special_use = \Sent
}
mailbox "Sent Messages" {
special_use = \Sent
}
mailbox Trash {
special_use = \Trash
}
prefix =
}
passdb {
args = /etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
postmaster_address = [email protected]
protocols = " imap pop3"
service auth {
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0666
user = postfix
}
unix_listener auth-userdb {
group = mail
mode = 0666
user = vmail
}
}
ssl_cert = </etc/ssl/certs/ssl-cert-snakeoil.pem
ssl_key = </etc/ssl/private/ssl-cert-snakeoil.key
userdb {
args = /etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
当我从 Gmail 发送电子邮件时，它会立即退回电子邮件并显示 554 5.7.1 错误代码。
我尝试过对比 smtpd_relay_restrictions 与 smtpd_recipient_restrictions，但没有得到积极的结果。
谢谢，韦恩
答案1
我看到您的邮件mydestination是空的；这可能是您的问题。如果目标域（@收件人地址中签名后的部分）在 中列出，服务器将仅接受邮件作为“传入” mydestination。否则，服务器会认为“此域不在，mydestination因此邮件不是给我的，我只会转发它”。
因此，添加mydestination = $mydomain到您的main.cf。