I own a mail/web server with IP 85.17.254.35 for several years already. Zero spam mails have been sent by this server, and as a consequence it is not on any blocklist. According to your Symantac IP Investigation Query "The IP address you submitted, 85.17.254.35, does not have a negative reputation"
Yet to some customers and business relations I can't send mails, the error I get is:
501 Connection rejected by policy [7.7] 14513, please visit www.messagelabs.com/support for more details about this error message.
I believe this has been an issue ever since I have this server. I assumed the problem would vanish automatically, but it doesn't. Can you please have a look? By the way the URL you are referring to (www.messagelabs.com/support) does not exist.
Thank you.