POSTFIX不發送電子郵件到1and1只主

Question

我已經在我的1and1 VPS上安裝了帶POSTFIX的ubuntu 14.04，我有問題發送電子郵件到我自己的電子郵件。

當我發送郵件到：

• outlook.com收到
• yahoo.com收到
• Gmail.com收到
• example.co.uk（郵件的1and1）NOT RECEIVED

main.cf

# 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 

# 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 = example.co.uk 
alias_maps = hash:/etc/aliases 
alias_database = hash:/etc/aliases 
mydestination = localhost 
relayhost = 
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 
mailbox_command = 
mailbox_size_limit = 0 
recipient_delimiter = + 
inet_interfaces = all 
myorigin = /etc/mailname 
inet_protocols = all 

Answer 1

當我通過mailq命令檢查了我的郵件隊列時，我收到錯誤：(delivery temporarily suspended: host mx01.1and1.co.uk[xxx.xx.xxx.xx] refused to talk to me: 554-kundenserver.de (mxeue105) Nemesis ESMTP Service not available 554-No SMTP service 554 invalid DNS PTR resource record, IP=xxx.xxx.xxx.xxx，所以我剛添加了一個PTR（反向DNS）條目。

現在它的工作:)