Hotmail is bouncing my emails error 550 SC-001

My website is sending email to hotmail/live.com/msn etc and they are bouncing. Why?

If you or your web site is sending emails to any microsoft service from a ukcheaphost server, and you get a bounce message that looks something like this...

host mx2.hotmail.com [65.54.188.72]: 550 SC-001 Unfortunately, messages from 109.75.171.198 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 http://mail.live.com/mail/troubleshooting.aspx#errors.

One of the main reasons for bouncy emails is lack of "sender id" (more commonly known as SPF record) and a "domain key", inside your dns settings.

For those with SSH access, run the following commands on the command line.

/usr/local/cpanel/bin/domain_keys_installer cpanel_username
/usr/local/cpanel/bin/spf_installercpanel_username

Then if you check your dns settings, you will notice two new entries.

If you do not have SSH access, then please contact support@ukcheaphosts.com and we will be happy to implement spf and domain keys for you.

Some additional resources for understanding about this issue are:
SPF (sender Policy Framework) :http://www.openspf.org/
Live.com Mail Troubleshooting: http://mail.live.com/mail/troubleshooting.aspx#errors
Microsoft Sender ID:http://www.microsoft.com/mscorp/safety/technologies/senderid/default.mspx
Adding Domain Keys:http://www.sohailriaz.com/how-to-add-domainkeys-and-spf-records-on-cpanel-servers/


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