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Mail HELO, how to change this value on cPanel account

Answered
Python Ssssss

Hi guys, is there any way to change the value Mail HELO, from a cpanel account?

I found some tips on disabling the "Use the reverse DNS entry for the mail HELO/EHLO if available" and using file `/etc/mailhelo` to update the value...

But is there anyway to achieve this without disabling the option mentioned above?

The reason for this is that actually the domain being used in HELO is not registered anymore, so I just needed to change that so the PTR would be working out!

Comments

5 comments

Date Votes
  • cPRex Jurassic Moderator

    Hey there!  You still need root access to edit the /etc/mailhelo record, and that is the only supported way to make this change.  Is the issue with the server's hostname?  If so, it might be best in the long-term to update the hostname of the machine.

    The details on how to make that change can be found here: https://support.cpanel.net/hc/en-us/articles/4405084705559-How-to-enable-custom-mail-HELOs

    0
  • Python Ssssss

    Is the issue with the server's hostname?

    If you mean to change the hostname of the machine, no, I don't think that's exactly the case, because the Mail HELO active in that account is not the hostname of the server, it's a domain that is unregistered, thus, rDNS would simply not work for verification in the recipient side...

    By the way, all this discussion is to solve this kind if problem...

    host mx.uhserver.com [IP_FROM_RECIPIENT_SERVER]
    SMTP error from remote mail server after RCPT TO:user@mailhost.com.br:
    450 4.7.25 Client host rejected: cannot find your hostname, [IP_FROM_SENDING_SERVER]:
    retry timeout exceeded
    But okay, if that's the only way I'll dig deeper in this approach.
     
    Thanks for the clarification!
    0
  • cPRex Jurassic Moderator

    Are you able to access WHM through the server's hostname, or does it respond to ping?  We may need to see a ticket to help troubleshoot the issue, but there seems to be a DNS issue of some sort causing this problem.

    0
  • Python Ssssss

    Hi, sorry for the late reply, but got the problem addressed and solved here!

    The problem was that the domain used at the Mail HELO host from my client account, was unactive, and also wouldn't be used.

    So what I did was change this to another domain that my client was using and that also was pointing to the server (not an external one), adjusting the PTR of IP_FROM_SENDING_SERVER to resolve to the same added host, to be able to be resolved via rDNS again!

    And yes, did the change via /etc/mailhelo!

    Thanks once again, Mr. cPRex!

    0
  • cPRex Jurassic Moderator

    You're very welcome!

    0

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