Not able to send email to Clemson?

If you are attempting to send email to Clemson University (@clemson.edu) from an outside agency or company (e.g. @dnr.sc.gov) and are receiving error messages indicating "Access denied. IP name possibly forged" or "Access denied. IP name lookup failed", Clemson may be rejecting your email because our email routing now requires sending domains allow us to successfully complete Reverse Domain Name Server Lookup. This lookup verifies that the domain name is valid by comparing the IP address from which the message was sent with the IP address registerd for the domain name. This configuration has become standard protocol in email processing.

To solve this issue, your agency or company must change their mail routing configuration as well. Information about this configuration can be found at http://tools.ietf.org/html/rfc1912 (refer to section 2.1) and http://en.wikipedia.org/wiki/FCrDNS.

If you are a technical support person at an agency or company attempting to send email to Clemson and would like assistance, we have setup an alternative Clemson Postman address at postman@g.clemson.edu for you to forward error messages to and request assistance from our technical staff.