使用GMail SMTP寄信 – ssmtp (CentOS)

1. yum install ssmtp

2. vim /etc/ssmtp/ssmtp.conf
   root=username@gmail.com
mailhub=smtp.gmail.com:587
RewriteDomain=
Hostname=username@gmail.com
UseSTARTTLS=yes
AuthUser=username@gmail.com
AuthPass=password
FromLineOverride=YES
TLS_CA_File=/etc/pki/tls/certs/ca-bundle.crt

3. alternatives –config mta
   選擇 /usr/sbin/sendmail.ssmtp

4. 檢查目前sendmail方式
   sendmail -V
   sSMTP 2.61 (Not sendmail at all)

5. 測試
   echo “This is a test” | mail -s “Test” cowman.chiang@gmail.com

Reference
1. After updating sSMTP to version 2.61 I cannot send mail via gmail
2. How To Setup sSMTP on CentOS 5.9