My dedicated server ns382087.ovh.net resolves to 46.105.98.72 and hosts multiple domain with several dedicated IP addresses. Each new IP address is added to /etc/network/interfaces
Among them, the dedicated server hosts my domain grand-manitou.com which resolves to 46.105.48.41
MXToolbox.com states that there is an issue when performing SMTP Test:
Warning – Reverse DNS does not match SMTP Banner
My question is: how can I solve this problem?
Edit: Is there a workaround to configure my domain grand-manitou.com so that it designates ns382087.ovh.net as smtp/mail server ?
Best Answer
When your mail server identifies itself at SMTP time, it says its name is:
220 ns382087.ovh.net ESMTP
However, the SMTP server (obtained from grand-manitou.com's MX record) is actually mail.grand-manitou.com at 46.105.48.41.
The solution is to configure your mail server to identify itself correctly as mail.grand-manitou.com.