![如何在 Postfix 上禁用 Sendgrid 邮件中继](https://linux22.com/image/759278/%E5%A6%82%E4%BD%95%E5%9C%A8%20Postfix%20%E4%B8%8A%E7%A6%81%E7%94%A8%20Sendgrid%20%E9%82%AE%E4%BB%B6%E4%B8%AD%E7%BB%A7.png)
我有一个 Sendgrid 帐户,并已将 Sendgrid 设置为与我的 Postfix 邮件服务器配合使用。但是,我想禁用 Sendgrid 作为邮件中继。我按照本文进行设置:https://serverok.in/postfix-sendgrid
但是,我不确定如何禁用 Sendgrid。我是否只需要在 /etc/postfix/main.cf 中注释掉这些行?
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_sasl_tls_security_options = noanonymous
smtp_tls_security_level = encrypt
header_size_limit = 4096000
relayhost = [smtp.sendgrid.net]:587
删除后,我应该只需重新启动 postfix 即可使用以下命令使更改生效?
sudo postfix reload
这是我的 /etc/postfix/main.cf 文件:
# 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 $mail_name (Ubuntu)
biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
readme_directory = no
# TLS parameters
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${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 = [hidden for security]
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
mydestination = $myhostname, [hostname hidden], localhost.localdomain, , localhost
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = loopback-only
inet_protocols = all
transport_maps = hash:/etc/postfix/transport
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_sasl_tls_security_options = noanonymous
smtp_tls_security_level = encrypt
header_size_limit = 4096000
relayhost = [smtp.sendgrid.net]:587
smtpd_client_restrictions = reject_unknown_client
disable_vrfy_command = yes
我希望能够禁用 Sendgrid 中继,但仍然让我的 postfix 邮件服务器正常运行并发送电子邮件。