我正在设置一个邮件服务器（ubuntu14.4 serverX64）用于开发/测试目的（使用 virtualBox 桥接模式），我刚刚完成了这个教程
一切都顺利。
现在我无法使用以下任一方式登录/使用电子邮件服务：
- 雷鸟客户端
- 松鼠邮件
Thunderbird 上显示：登录服务器失败，松鼠上显示“未知用户或密码不正确”。，我缺少什么？
这是我的后缀 main.cf
#See /usr/share/postfix/main.cf.dist for a commented, more complete version
# 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 $mail_name (Ubuntu)
biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
readme_directory = /usr/share/doc/postfix
# TLS parameters
smtpd_tls_cert_file = /etc/postfix/smtpd.cert
smtpd_tls_key_file = /etc/postfix/smtpd.key
smtpd_use_tls = yes
smtpd_tls_session_cache_database = btree:${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 = mail.ely.net
#myhostname = 192.168.1.100
alias_maps = hash:/etc/aliases, hash:/var/lib/mailman/data/aliases
alias_database = hash:/etc/aliases, hash:/var/lib/mailman/data/aliases
myorigin = /etc/mailname
mydestination = mail.ely.net, localhost, localhost.localdomain
#mydestination = 192.168.1.100, localhost, localhost.localdomain
relayhost =
mynetworks = 127.0.0.0/8 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
html_directory = /usr/share/doc/postfix/html
virtual_alias_domains =
virtual_alias_maps = hash:/var/lib/mailman/data/virtual-mailman, proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, proxy:mysql:/etc/postfix/mysql-virtual_email2email.cf
virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf
virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf
virtual_mailbox_base = /var/vmail
virtual_uid_maps = static:5000
virtual_gid_maps = static:5000
inet_protocols = all
smtpd_sasl_auth_enable = yes
broken_sasl_auth_clients = yes
smtpd_sasl_authenticated_header = yes
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, check_recipient_access mysql:/etc/postfix/mysql-virtual_recipient.cf
smtpd_tls_security_level = may
transport_maps = hash:/var/lib/mailman/data/transport-mailman, proxy:mysql:/etc/postfix/mysql-virtual_transports.cf
relay_domains = mysql:/etc/postfix/mysql-virtual_relaydomains.cf
relay_recipient_maps = mysql:/etc/postfix/mysql-virtual_relayrecipientmaps.cf
proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks
smtpd_sender_restrictions = check_sender_access mysql:/etc/postfix/mysql-virtual_sender.cf
smtpd_client_restrictions = check_client_access mysql:/etc/postfix/mysql-virtual_client.cf
smtpd_client_message_rate_limit = 100
maildrop_destination_concurrency_limit = 1
maildrop_destination_recipient_limit = 1
virtual_transport = dovecot
header_checks = regexp:/etc/postfix/header_checks
mime_header_checks = regexp:/etc/postfix/mime_header_checks
nested_header_checks = regexp:/etc/postfix/nested_header_checks
body_checks = regexp:/etc/postfix/body_checks
owner_request_special = no
smtp_tls_security_level = may
dovecot_destination_recipient_limit = 1
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
content_filter = amavis:[127.0.0.1]:10024
receive_override_options = no_address_mappings
message_size_limit = 0
如果我从服务器（virtualbox-ubuntuServer14.04X64）进行 nslookup 我得到
root@mail:/etc/nginx# nslookup mail.ely.net
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
mail.ely.net canonical name = mail.netidentity.com.cust.hostedemail.com.
Name: mail.netidentity.com.cust.hostedemail.com
Address: 216.40.42.5
从主机（ubuntu桌面14.04x64）
main@main:~$ nslookup mail.ely.net
Server: 127.0.1.1
Address: 127.0.1.1#53
Non-authoritative answer:
mail.ely.net canonical name = mail.netidentity.com.cust.hostedemail.com.
Name: mail.netidentity.com.cust.hostedemail.com
Address: 216.40.42.5
这是完全正确的，因为它是一台虚拟机，并且正在查看局域网之外的虚拟机
现在在 ispconfig 邮件队列日志中我有这个有趣的事情：
Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient-------
C73EE221A5A 2545 Wed Aug 6 01:31:51 [email protected]
(lost connection with mx.netidentity.com.cust.hostedemail.com[216.40.42.4] while receiving the initial server greeting)
[email protected]
所以显然这里的问题是关于IP的，因为它看起来是真正的mail.ely.net主机而不是我的虚拟服务器......所以问题出现了：
- 是否可以从外部世界（即 gmail/yahoo）发送和接收电子邮件，并使其像个人邮件服务器一样工作。
- 我怎样才能改变conf，以便我能很好地与外界相处
- 完成上述教程后，为什么我会遇到或如何解决用户未找到/登录问题的问题。