At the beginning of June 2018, we acquired a new dedicated server.
We soon learned that its IP address had a bad reputation before we acquired it.
About four weeks ago, I submitted our IP address at http://ipremoval.sms.symantec.com/lookup/
It was soon after that I was finally able to send e-mail to fedex.com addresses.
Recently, I learned that e-mails are not able to be sent to domains that use clusterX.us.messagelabs.com mail servers.
Connection attempts are timing out.
Currently, http://ipremoval.sms.symantec.com/lookup/ shows "The IP address you submitted, 66.70.179.220, does not have a negative reputation and therefore cannot be submitted for investigation."
However, it seems that our IP is being throttled or blocked.
Please clear this up.
Thank you.