☰

Postfix 无法从外部来源 centos 7 接收邮件

tag-icon • tag-icon postfix email-server dovecot centos7 squirrelmail
Postfix 无法从外部来源 centos 7 接收邮件

我使用 postfix、dovecot、squirrelmail 作为邮件服务器，一切正常，只是我无法接收来自外部来源的邮件。我可以向本地和外部来源发送邮件。

我正在关注这教程

我从外部来源发送邮件时出现此错误

Technical details of temporary failure:
The recipient server did not accept our requests to connect. Learn more at https://support.google.com/mail/answer/7720
[(1) mail.example.com. [62.210.36.xx]:25: socket error]
[(10) smtp.example.com. [62.210.36.xx]:25: socket error]

我的 postfix main.conf

myhostname = mail.example.com
mydomain = example.com
myorigin = $mydomain
inet_interfaces = all
inet_protocols = all
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
mynetworks = 62.210.36.0/24, 62.210.16.0/6, 192.168.1.0/24, 127.0.0.0/8, [::ffff:127.0.0.0]/104 [::1]/128
unknown_local_recipient_reject_code = 550
mynetworks_style = host
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
home_mailbox = Maildir/

我的 dovecot 配置

dovecot.conf
protocols = imap pop3 lmtp 

10-mail.conf
mail_location = maildir:~/Maildir

10-auth.conf
disable_plaintext_auth = yes
auth_mechanisms = plain login

我在 smtp 端口检查上有这个

[root@example ~]# sudo netstat -pel | grep smtp
tcp        0      0 localhost:smtp          0.0.0.0:*               LISTEN      root       106803     19109/master
tcp6       0      0 localhost:smtp          [::]:*                  LISTEN      root       106804     19109/master
unix  2      [ ACC ]     STREAM     LISTENING     106845   19109/master         private/smtp

我在 25 端口上检查了这一点

[root@example ~]# netstat -plnt |grep :25
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      2505/master
tcp6       0      0 ::1:25                  :::*                    LISTEN      2505/master

我已经在 MX 上检查过了

[root@example ~]# dig mx example.com

; <<>> DiG 9.9.4-RedHat-9.9.4-18.el7_1.5 <<>> mx example.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48464
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 3

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;example.com.                        IN      MX

;; ANSWER SECTION:
example.com.         3600    IN      MX      1 mail.example.com.
example.com.         3600    IN      MX      10 smtp.example.com.

;; AUTHORITY SECTION:
example.com.         3600    IN      NS      ns42.domaincontrol.com.
example.com.         3600    IN      NS      ns41.domaincontrol.com.

;; ADDITIONAL SECTION:
mail.example.com.    3600    IN      A       62.210.36.xx
smtp.example.com.    3600    IN      A       62.210.36.xx

;; Query time: 558 msec
;; SERVER: 62.210.16.xx#53(62.210.16.xx)
;; WHEN: Wed Nov 25 16:08:41 CET 2015
;; MSG SIZE  rcvd: 169

请看看为什么我无法从外部来源获取邮件。

谢谢

答案1

[root@jersey ~]# telnet 62.21X.36.XX 25
Trying 62.21X.36.XX...
telnet: connect to address 62.21X.36.XX: No route to host

联系您的 ISP（或 VPS 提供商）。

看起来他们正在过滤您的入站流量。

相关内容