[SOLVED] DNS for Proxmox Mail Gateway

I'm not sure what you mean by link to proxmox mail gateway. Please explain which dns-name is wrong, and what the correct one would be.
Also if possible please post plain-text logs instead of screenshots.
When I read the log at the tracking center I found myself having the wrong ip address of proxmox. Although I installed dns for proxmox and nslookup to the correct IP of mail server or proxmox. How to solve this problem?

mail postfix/qmgr[936]: E4E6563C40: from=<postmaster@thuctap.com>, size=2546, nrcpt=1 (queue active)
mail postfix/smtp[985]: E4E6563C40: to=<external@proxmox.com>, relay=none, delay=512645, delays=512624/0.41/21/0, dsn=4.4.1, status=deferred (connect to mail.proxmox.com[]:25: Connection refused)
mail postfix/qmgr[936]: E4E6563C40: from=<postmaster@thuctap.com>, status=expired, returned to sender
mail postfix/qmgr[936]: E4E6563C40: removed
I do not understand.
The only DNS-name/IP I see in this log is correct:
'mail.proxmox.com IN A` is the correct entry (and proxmox.com is not your domain)

I would suggest that you use a hostname, which has your domain at its end:
pmg.thuctap.com, mail.thuctap.com

hope this helps!
When I reboot, proxmox may have run under the ip I declared because there are no more errors. The next error I encountered was unknown user. Looking forward to seeing you in that article. Thank you


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