我有简单的postfix + dovecot配置，当我使用Outlook（SMTP AUTH + IMAP）时一切正常。问题是当我尝试通过localhost上的mail（）函数发送电子邮件时。收件人收到：
Diagnostic-Code: smtp; 575 email@email sender requires authentication
我的配置文件如下：
unknown_local_recipient_reject_code = 550
mynetworks_style = host
readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
smtpd_sasl_auth_enable = yes
smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination
myorigin = domain.bg
smtpd_use_tls=yes
smtpd_tls_cert_file = /etc/letsencrypt/live/domain/fullchain.pem
smtpd_tls_key_file = /etc/letsencrypt/live/domain/privkey.pem
smtp_use_tls = yes
fallback_relay =
smtpd_tls_security_level = may
和master.cf
smtp inet n - n - - smtpd
submission inet n - n - - smtpd
# -o smtpd_tls_security_level=may
# -o smtpd_sasl_auth_enable=yes
# -o smtpd_client_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
smtps inet n - n - - smtpd
-o syslog_name=postfix/smtps
-o smtpd_tls_wrappermode=yes
-o smtpd_sasl_auth_enable=yes
-o smtpd_client_restrictions=permit_sasl_authenticated,reject
-o milter_macro_daemon_name=ORIGINATING