Reverse lookup error

I found the following in my server logs :

gethostby*.getanswer: asked for "7.212.72.222.in-addr.arpa IN PTR", got type "A"
gethostby*.getanswer: asked for "138.0.68.222.in-addr.arpa IN PTR", got type "A"
gethostby*.getanswer: asked for "5.64.72.222.in-addr.arpa IN PTR", got type "A"
gethostby*.getanswer: asked for "148.48.69.222.in-addr.arpa IN PTR", got type "A"

It seems that when doing a reverse lookup, the server expected resouce record to be PTR. However, the system administrator make mistake to specify an A record, causing reverse lookup failure. As far as I can recall, reverse lookup failure might deny email and ftp services. It would be nice if some one can alert the system administrator to report the error.