smtp reverse vailid hostname

  1. T

    Question Reverse DNS is not a valid Hostname (crazy...)

    Hello, i have follow error on my MailServer, but all mails can be sending to other in success. If I Check https://mxtoolbox.com/SuperTool.aspx?action=smtp%3a212.132.104.61&run=toolpage Then the SMTP Valid Hostname Fail to Reverse DNS is not a valid Hostname The PTR Check on ...
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