stepbystep3d

I love reading all about the spam and prevention techniques. (I'm a geek) We work hard to implement and monitor our email delivery i.e. dkim,sft, delivery reports. and if we were to do any email at scale I would probably setup a subdomain for my campaigns so as to not effect the primary domain rank and primary intake email delivery . but in this case it's our main intake email only that's flagged by spancop. that's what has me puzzled. Thanks for the input.

Looking for assistance to stop my email from being blocked by spamcop to a single client. I do have additional message header information Response email: mail.rewebdesign.net rejected your message to the following email addresses: info@stepbystep3d.com sending to support@mpembed.com Your message couldn't be delivered because it's suspected of being spam. For best practices when sending email, refer to the guidelines found here: https://aka.ms/EmailingBestPractices. mail.rewebdesign.net gave this error: Decision Engine classified the mail item was rejected because of IP Block (from outbound normal IP pools) -> 554 5.7.1 Service unavailable; Client host [40.107.220.133] blocked using bl.spamcop.net; Blocked - see https://www.spamcop.net/bl.shtml?40.107.220.133