Email DNS Configuration — CyberPanel - WebHosting Control Panel for OpenLiteSpeed

Email DNS Configuration

I had set up a small vps using cyberpanel, done configure the necessary setting include rdns.

unfortunately, when I send a test to, I see this, which I had no clue where to amend.
(I don't remember I had configured such URL during my installation 🤔)

Anyone can point me some direction?

screenshot here:
Calvyn Lee - Digital Marketing Trainer


  • thank for the direction,

    when I try to issue ssl for my mail server, I receive this error message.

    Cannot issue SSL. Error message: 0,283 Failed to obtain SSL for domain. [issueSSLForDomain]

    Is there any additional step I require to take before I issue ssle for my mail server?
    Calvyn Lee - Digital Marketing Trainer
  • I searching around the forum, found one of your reply recommend to add this code:

    # wget -O - | sh

    After that I manage to add ssl for my mail server. I solve partially of the problem, but from mail-tester, I still see below error:

    Your IP address 45.xx.xx.xx is associated with the domain
    Nevertheless your message appears to be sent from

    You may want to publish a pointer (PTR type) DNS record with a value of or use as hostname in your mail software

    Here are the tested values for this check:
    IP: 45.xx.xx.xx

    Basically my rnds is set in my vps control panel. I am no clue where should further troubleshoot?

    Anyone can give me some direction? I believe I need to do some setting for PTR?
    Calvyn Lee - Digital Marketing Trainer
  • I solve the problem by change my rdns from to

    Calvyn Lee - Digital Marketing Trainer
  • Type your comment> @calvynlee said:
    > I solve the problem by change my rdns from to

    May I ask how you can do that?
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