I manage all DNS settings on my network. Currently, my users are experiencing issues when e-mailing Comcast users. The error returned is a 554 error. "554 IMTA21.emeryville.ca.mail.comcast.net comcast 220.127.116.11 Comcast requires that all mail servers must have a PTR record" I thought I had all rDNS settings set up the way they needed to be. Can someone tell me what my A record should look like for a mail domain?
My current record looks like:
mail.servername.org A IN 18.104.22.168