I have a client that says he is getting a bounceback when sending a message to our domain
mail.summit-inc.net rejected your message to the following email addresses:
mail.summit-inc.net gave this error:
Invalid RDNS entry for 18.104.22.168
I went to DNSSTUFF.COM and looked up the rdns for our domain and it looked correct.
22.214.171.124.in-addr.arpa. PTR IN 3600 41ms co*****.com.
Is there another reason why the clients message would get rejected? I don't really understand the whole rdns thing in the first place so I guess it could very well be incorrect!