问题 提问于 2013年8月29日
When sending to Microsoft domains (hotmail.com, live.com, outlook.com) emails are bouncing with the error 550 SC-001 from the troubleshooting guide this suggests a poor sender reputation. However checking the sender score,
my IP address is rated at 98, almost a perfect 100. We have SPF and DKIM as well as DMARC records set up and ensure that our emails are only to people who have requested them. What is likely to be the issue here? There is a suggestion that other servers
on the same subnet may be at fault, however I have no control over other servers, only my own. Why should I be penalised for the actions of others that I have no control over?
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