Hello,
Our emails sent to one of our business partners are getting filtered with delivery error "501 Connection rejected by policy [7.7]".
Here is a quick log of example: "host cluster5.eu.messagelabs.com [193.109.255.99]
SMTP error from remote mail server after initial connection:
501 Connection rejected by policy [7.7] 4802, please visit <http://www.messagelabs.com/support> www.messagelabs.com/support for more details about this error message."
"
Our mail server is properly configured and not blacklisted in anyway (from what we know).
I have tried contact your support, but im unable to find any information about how do this. I even try contact by phone, but the operator doesn't even know what im talking (possible becouse was only to clients with active services).
I have tried use your "IP Investigation Request" system, but doesn't appears to work, as the IP gets listed again and with no new email sent.
Is possible check your system and authorize our IP address 176.31.217.177, or let us know what actually triggerred the block so we can take corrective action.
Thanks