我已经按照以下指南安装了 postfix/dovecot/postfixadmin https://www.linuxbabe.com/mail-server/setup-basic-postfix-mail-sever-ubuntu
我已经设置了虚拟域。我可以在其中一个虚拟域中配置一个邮箱的邮件客户端并发送邮件，以便接收来自我的服务器的邮件，但不能接收来自外部的邮件。
我发现了一些类似的东西 Dovecot / Postfix / SASL：连接到 /var/run/dovecot/auth-client 失败：权限被拒绝
但删除 chrooting 对我来说不起作用。
这是我的 postfix main.cf 的摘录
biff = no
append_dot_mydomain = no
readme_directory = no
compatibility_level = 2
smtpd_tls_cert_file=/etc/letsencrypt/live/mydomain/fullchain.pem
smtpd_tls_key_file=/etc/letsencrypt/live/mydomain/privkey.pem
smtpd_tls_security_level = may
smtpd_tls_loglevel = 1
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_CApath=/etc/ssl/certs
smtp_tls_security_level = may
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
myhostname = mydomain
mydomain = domain.tld
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = localhost.$mydomain , localhost
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all
mailbox_transport = lmtp:unix:private/dovecot-lmtp
smtputf8_enable = no
virtual_mailbox_domains = proxy:mysql:/etc/postfix/sql/mysql_virtual_domains_maps.cf
virtual_mailbox_maps =
proxy:mysql:/etc/postfix/sql/mysql_virtual_mailbox_maps.cf,
proxy:mysql:/etc/postfix/sql/mysql_virtual_alias_domain_mailbox_maps.cf
virtual_alias_maps =
proxy:mysql:/etc/postfix/sql/mysql_virtual_alias_maps.cf,
proxy:mysql:/etc/postfix/sql/mysql_virtual_alias_domain_maps.cf,
proxy:mysql:/etc/postfix/sql/mysql_virtual_alias_domain_catchall_maps.cf
virtual_transport = lmtp:unix:private/dovecot-lmtp
virtual_mailbox_base = /var/vmail
virtual_minimum_uid = 2000
virtual_uid_maps = static:2000
virtual_gid_maps = static:2000
local_recipient_maps =
home_mailbox = Maildir/
policyd-spf_time_limit = 3600
smtpd_recipient_restrictions =
permit_mynetworks,
permit_sasl_authenticated,
reject_unauth_destination,
check_policy_service unix:private/policyd-spf
smtp_tls_note_starttls_offer = yes
smtpd_tls_received_header = yes
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_local_domain =
smtpd_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes
smtpd_sasl_auth_enable = yes```
When I run
sudo doveadm auth test my username
I get
`auth-client: conn unix:/var/run/dovecot/auth-client: connect(/var/run/dovecot/auth-client) failed: Connection refused`