Forum Discussion
Office 365 IP black list and email bounce from Outlook.com
My users are getting bounce back email for mails send to Outlook.com users for the past one week. From the NDR I came to know that Office 365 IPs 104.47.1.243 and 104.47.2.218 are currently black listed by many spam monitors.
Reference:
http://mxtoolbox.com/SuperTool.aspx?action=blacklist%3a104.47.1.243&run=toolpage
http://mxtoolbox.com/SuperTool.aspx?action=blacklist%3a104.47.2.218+&run=toolpage
I raised this with your support team below was there reply.
"Issue which you are facing is related to Hotmail blocklist and we don't have any access to Hotmail block database, request you to please create a case with Hotmail support team and they will be right one to look into the issue."
I am not sure why your support team is asking customers to get Office 365 IP black list removed. First of all the IP is not owned by us and we cannot request black list to be removed for the IP being used for spamming by other Office 365 customers. Also as far as I am aware Outlook.com and Office 365 are both use domain Outlook.com in backend to send and recieve emails. Why would you black list your own IP in the first place?
Outlook.com and Office 365 are different systems in the back end, so they don't have control over each other's settings.
Having said that, the reply you SHOULD have been given from Office 365 support is that they would look into why their IP addresses had been blocked by SORBS, Slashback etc. You're right - it's not your job to get them un-blacklisted. The golden rule of requesting a blacklist removal is to first ensure the reason for the listing has been addressed - something which you have no control over.
Did you raise this as a support ticket within the Office 365 Admin Centre? Reply to the ticket and tell them they need to work on becoming unlisted by the various services (not just Hotmail).
Keep us posted.
-Sonia
The reason why I said both outlook and Office 365 run same back end because office mail sending server hostname is DB6PR0202MB2613.eurprd02.prod.outlook.com. Even office 365 autodiscover is something like autodiscover-apacnorth.outlook.com. Which are obviously part of outlook.com domain.
I did reply them the same about a week ago and still they haven't responded. I raised this ticket almost 2 weeks ago as service unavailability and still no action has been taken by office 365 support team.
