2025/3/4 -Resolution. Contact the server provider of the IP address in order to correct PTR record and make it point to the mail server hostname. For Plesk hosted ...
2024/9/3 -Cannot send mail messages from Plesk server. Client host rejected: cannot find your reverse hostname · Mail users on Plesk server are unable to receive or ...
2024/12/11 -When an outgoing email fails to be delivered, it is necessary to first differentiate between local host server issues and recipient's email server issues.
2025/5/24 -1 “Client Host Rejected” – The receiving server has flagged your server or IP due to reputation issues or policy settings. Check your sender reputation or ...
2025/3/21 -The initial Cannot find hostname in DNS error may occur because of external domain issues or local Outlook problems. Below are the steps to resolve this.
2024/9/30 -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.
2024/10/8 -1 Client host rejected: cannot find your reverse hostname,. Looking at /var/log/messages on both servers. I'm seeing lots of query failures. Examples: Quote ...
2024/12/11 -(host mail.xx.xx[xxx.xxx.xxx.xxx] said: 550-5.7.1 Client host rejected: cannot find your hostname, [94.140.18.70] 550 5.7.1 Generated by xxxx Mailgateways.
2024/8/12 -I tried getting free Resilio subscription and found out it can't be delivered to my primary mail. I guess I can use GMail for that, though this was a surprise.
2025/1/9 -The domain name given in the EHLO command MUST be either a primary host name (a domain name that resolves to an address RR) or, if the host has no name, an ...