Chip eServices Blog

Yesterday, we discussed how Blacklists can affect email delivery. There is a second issue that may affect mail delivery to certain email addresses.

 In order to reduce SPAM some email servers chech that the IP address from whence an email came is associated with the sender of the email. This association is made by linking the IP address and the domain name in a Reverse DNS Lookup Record.

You can again use http://www.mxtoolbox.com to verify that a Reverse DNS Lookup exists or you can use http://www.dnsstuff.com to check also.

 As an example of this issue, we have experience that Yahoo and AOL mail servers check that these records exist.

If you have any concerns or difficulties relating to Reverse DNS Lookup then please contact our Network Operations Centre on +353 21 4854300 for support.