Email Security.cloud

Hello,

I have an email system on IP: 188.165.166.131

My users and I have been getting some mails returning with: "501 Connection rejected by policy [7.7]"

The server is not black listed, implements DKIM, and on http://ipremoval.sms.symantec.com/lookup/ it reports:

"The IP address you submitted, 188.165.166.131, does not have a negative reputation and therefore cannot be submitted for investigation."

Could you please check why this address is getting blocked?

Thanks,

Hi Luca,

I can now confirm that I have now removed the IP 188.165.166.131 from our internal Blacklist and reset the confidence of that IP accross all our towers.

This has now fixed the isseue and you will no longer get issues sending emails from that IP to our customers.

Please feel free to set this thread as resolved.

Kind regards

Kevin Brosnan

Tier 2 Senior Technical Support Engineer