I can't get mail

[wjinbo]

25、587、3000 Port is open，node、redis、mongodb Has been installed，CentOS has been successfully installed，But I don't get any mail，My domain name http://mail.1yzq.com ， I need your help，Thinks

mailsac worker DIED 1891499 0 +13s
mailsac ------ Mailsac Worker Start ------ development 1891547
+0ms
(node:1891547) DeprecationWarning: open() is deprecated in mongoose >= 4.11.0, use openUri() instead, or set the useMongoClient option if using connect() or createConnection(). See http://mongoosejs.com/docs/4.x/docs/connections.html#use-mongo-client
mailsac mongo connected localhost +215ms
mailsac removal start 2021-01-15T07:31:53.836Z +58ms
(node:1891547) DeprecationWarning: Mongoose: mpromise (mongoose's default promise library) is deprecated, plug in your own promise library instead: http://mongoosejs.com/docs/promises.html
mailsac Mailsac is listening 3000 +7ms
mailsac-smtp SMTP server listening port 25 +0ms
mailsac-smtp SMTP server listening port 587 +0ms
mailsac removed { n: 0, ok: 1 } +2ms