I created a mailbox. It can normally receive mail and send mail to the mailbox account of the same server, but send mail to other mailboxes, and other mailboxes can't receive mail

CyberPanel Project Bug Report
1

I created a mailbox. It can normally receive mail and send mail to the mailbox account of the same server, but send mail to other mailboxes, and other mailboxes can’t receive mail

2

Prompt connection timeout in MAIL QUEUE

3

Please provide us the relevant logs to identify the issue.