1，大家都知道，阿里云一般禁用25端口，那我们如何使用阿里云服务器

发送邮件？2，开启邮件ssl端口465，在安全组开启。3，在腾讯邮件里面设置如下4，在服务器上配置关闭其它的邮件工具

service sendmail stop

chkconfig sendmail off

service postfix stop

chkconfig postfix off

安装mailx

yum install mailx -y

请求qq邮箱数字证书

mkdir -p /root/.certs/

echo -n | openssl s_client -connect smtp.qq.com:465 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > ~/.certs/qq.crt

certutil -A -n "GeoTrust SSL CA" -t "C,," -d ~/.certs -i ~/.certs/qq.crtcertutil -A -n "GeoTrust Global CA" -t "C,," -d ~/.certs -i ~/.certs/qq.crtcertutil -A -n "GeoTrust SSL CA - G3" -t "Pu,Pu,Pu" -d ~/.certs/./ -i qq.crtcertutil -L -d /root/.certs

配置/etc/mail.rc

set from=1195257477@qq.com

set smtp=smtps://smtp.qq.com:465

set smtp-auth-user=1195257477@qq.com set smtp-auth-password=xxxx #授权码set smtp-auth=loginset ssl-verify=ignore set nss-config-dir=/root/.certs

发送邮件测试echo "hello,world" | mail -s "测试邮件" 610323566@qq.com用465端口发送邮件配置完毕！参考教程：更多教程：