There is no need to have a PTR for mail.standardhardware.com as that is not an actual MX record. Yes, it is there, but it is not proper as mail.standardhardware.com is a cname. Not good.
http://www.dnsstuff.com/tools/ptr.ch?ip=168.75.225.197 Answer: No PTR records exist for 168.75.225.197. [Neg TTL=300 seconds] John Tolmachoff MCSE, CSSA IT Manager, Network Engineer RelianceSoft, Inc. Fullerton, CA 92835 www.reliancesoft.com --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com.