Sending Emails to Hotmail Addresses


A client of mine is having problems sending emails to @hotmail and @live email addresses from their domain.

They have a job system running on a dedicted virtual server at HYVE and it's sending email from LOCALHOST I have been told.

The bounce back emails are:-

Action: failed
Status: 5.5.0
Diagnostic-Code: smtp;550 SC-002 (BAY0-MC3-F19) Unfortunately, messages from weren't sent. Please contact your Internet service provider since part of their network is on our block list. You can also refer your provider to

The job system has been developed by ColdFusion

Who is Participating?
chilternPCConnect With a Mentor Commented:
you can check if you are blacklisted here:

you are not blacklisted but sending email from an IP address that is not authorised from that domain.

the administrator of the DNS record will need to update the Sender ID record to include the IP address that are authorised to send mail from that domain.

check with the admin of the server and its DNS entries for the  and the IP of the domain of the email address are they the same?

 if I have a website but the app on this server is sending emails using  email server Microsoft will complain. unless you configure it to trust it
if that make sense
As it is clear from the error message that your internet service provider is listed in the blocklist of Microsoft. Please contact your internet service provider or your local IT team to check with Microsoft and remove the domain / IP from their blocklist.
ryank85Author Commented:

That's the thing, we have been in contact with the IPS and everything is fine, I have even checked on

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.