AlibabaCloud DirectMail is transactional email service from AlibabaCloud. It is like Amazon SES, MailGun, SendGrid etc… They have 3 differnt mail server hostname depending on region. Unlike other SMTP providers, they allow email using port 80.
SMTP service address (China East 1): smtpdm.aliyun.com
SMTP service address (Singapore): smtpdm-ap-southeast-1.aliyun.com
SMTP service address (Sydney): smtpdm-ap-southeast-2.aliyun.com
SMTP port: 25, 80, 465 (SSL encrypted).
Note: Port 25 is currently disabled to maintain ECS security. If your sending application is deployed on Alibaba […]