SMTP(Simple Mail Transfer Protocol)是一种用于传输电子邮件的协议。在Linux系统中,SMTP服务通常由邮件传输代理(MTA)提供,如Postfix、Sendmail等。
要检查Linux系统上的SMTP服务是否已启动,可以使用以下命令:
sudo systemctl status postfix
或者,如果你使用的是Sendmail:
sudo systemctl status sendmail
SMTP服务广泛应用于各种需要发送电子邮件的场景,包括但不限于:
原因:
解决方法:
/etc/postfix/main.cf
。以下是一个简单的Postfix配置示例:
# /etc/postfix/main.cf
myhostname = mail.example.com
mydomain = example.com
myorigin = $mydomain
inet_interfaces = all
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
relayhost =
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no
append_dot_mydomain = no
readme_directory = no
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
home_mailbox = Maildir/
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
希望这些信息对你有所帮助!
领取专属 10元无门槛券
手把手带您无忧上云