Greetings!
We are a company offering various Internet related services.
Recently, we have transferred all our hosting servers to a new hosting server.
Our new and clean IP's have been listed as bad reputation on Symantec's list. at http://ipremoval.sms.symantec.com/lookup/. The IP has been neutralized and is not listed as a bad reputation anymore.
But yet, we still receive a return email as follows;
SMTP error from remote mail server after initial connection:
host cluster9.us.messagelabs.com [216.82.249.35]:
501 Connection rejected by policy [7.7] 13802, please visit www.messagelabs.com/support for more details about this error message.
I haven't confirmed yet, however I believe that the recipient domain is a client of Symantec. And it seems like the bad reputation de-listing is not updated or applied in the client's system.
This is very inconvenient for us as we will need to contact all of these domains to lift the target IP manually. It is not a practical practice at all.
I would appreciate if anyone could shed some light to this matter.
Thank you very much and good day.
