Your SMTP server is blocking email from our IP

Thanks for the suggestion but Comcast Security is totally clueless.  They kept trying to ask what my account is  They don't seem to understand that there are more email senders in the world than Comcast.  Last night I spent over an hour on the phone with Comcast Security, being passed around to five different people.  Finally the last one said she would escalate it but needed my account information.  Fortunately we have Xfinity TV (which I'm beginning to believe is a huge mistake) and she insisted on creating a report against my residential account.  This can create huge legal issues because our business server has absolutely nothing to do with the residential account I just happened to have.  What if I didn't have a residential account?

Someone was supposed to call me back this morning but no one has - and I highly doubt anyone will and will have to see what further steps I should take.

@Jerry_S, sorry to hear about the trouble getting a resolution. It definitely sounds like there is some confusion. I would recommend you utilize the link in my previous response. This will get the issue in front of the folks that can help. That link again is : https://spa.xfinity.com/report From the dropdown, select, "I'm not able to send e-mail to Comcast customers (comcast.net)". And submit the requested information. Thanks! 

Hi there, @Jerry_S! Please go here : https://spa.xfinity.com/report From the dropdown, select, "I'm not able to send e-mail to Comcast customers (comcast.net)". And submit the requested information. This will get the issue reported to the appropriate folks for resolution.