email blocked from known business

You are most welcome! 

For this I would like to run a few tests and see what is triggering the emails to be blocked. If you would please send us a direct message with your name and address I can help out. 

To send a direct message, please click on the chat icon in the top-right corner of the screen, and select "Xfinity Support" to initiate a live chat. 
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@XfinityCSAEmail​ 

the domain is @uniongeneral.com

the web host for that domain is Network Solutions

@smundy​ 

Can you please provide further detail to what you're having issues with? I'm looking at our logs and it shows that we have delivered 22 emails in the past 14 days to your inbox from the domain. 

@user_a0f600​ can you please provide more specific details? is the domain @esalerugs.com, .net, .org? also any and all email domains would be helpful so I can start looking into this for you. Its also not uncommon for large influx of spam to be associated with an email compromise meaning that its possible your email was used to also distribute spam. This can mean in the literal or spoofing sense and if not all email servers/services are using spoof-detection methods then you could end up being blocked. If any businesses use standard industry services (like most do) they can place you on a block list that will prevent communication to you. Unfortunately, Comcast does not use them and would be unable to tell you if they are blocking emails to you or if they have added your email to their listings to stop sending you emails. There are also other services like read-receipt confirmations. Some business or commercial related emails will notice with read-receipt if you haven't read their emails and unsubscribe you. Its rare for a business to usually get blocked by Comcast and its much more common for there to be a misconfiguration on the business' email server or the email domain blocking email to our customers.  To note, if any business is being blocked by Comcast, there will ALWAYS be a bounce message delivered from our server indicating to the business/sender on how to unblock and resolve any issues that may exist in reaching comcast.net customers. 

EDIT: additional thing to note, not all businesses use emails directly from their domain name (for example esalerugs.com, if its the domain may not be sending emails from esalerugs.com). If that is the case, just please review any previous emails you have received that you no longer do and check from what email those messages came from.