How to get new SMTP Server IP Address Block removed
I am setting up a new server which includes a Postfix SMTP server. When I try to send an email to an nc.rr.com address I get a message in the maillog like:
pkvw-mx.msg.pkvw.co.charter.net[126.96.36.199]:25: 501 EHLO x.x.x.x blocked
I don't get any further error code on that line I think because the line is getting cut off.