Scam/Span false positive causing a lot of trouble

To Comcast:

I appreciate that your email system uses pattern-matching algorithms to detect and stop probable scam/spam emails.  That is a useful service for your customers. 

However, problem-detecting algorithms sometimes make “false positive” identifications.  I know that as a company, you are disinclined to admit the possibility, but it is true, nonetheless.

I’m the tech-guy in our condominium complex.  I installed a MySpool mailbox alert system that detects when the mail delivery person opens their side of one of the pigeonhole mailboxes in our complex.  When that happens, the MySpool receiver, which is connected to the internet, sends a signal to a server.  That server then generates a text message to my phone, and an email message to my [Edited: "Personal Information"] email account.  The message looks like this:

[screenshot available on request]

When my server (running Microsoft Outlook) receives the message it forwards that message to a number of people in the complex using an Outlook “rule”:

[screenshot available on request]

This system has been working fine for several years.  It was a great service, since mail deliveries are not consistent.  In a 55-and-older community, it was great not to have to trudge through bad weather to find that the mail hadn’t been delivered yet. However, a few months ago I sent an email message to the list of recipients reminding them that if they wanted to “unsubscribe”, they should NOT click on the link in the message, but rather to email me directly, so that I could remove them from the subscription list.

Several days later, I received a “bounce” email from my email provider, indicating that several of the email addresses rejected the emails.  The addresses were ALL comcast.net email addresses, and no others.

Despite the “bounces” from my manually generated message, at that time the automatic forwardings were working fine.

I spent several frustrating hours on the Comcast/Xfinity website, trying to resolve the issue.  Despite initial denials, someone did seem to resolve the issue … for a while.

Now the reverse is happening.   I can manually send messages to everyone on the list, including the Comcast.net addresses, but the automatic forwardings generated by the outlook rule are not getting through, or are only getting through after many hours of delay.  I am not getting “bounce” emails from my email provider though.

Can we please fix this?  I know separating legitimate emails from spam and scam is difficult.  I am prepared to have the comcast.net members of my forwarding list contact Comcast and attest that I am not a spammer or scammer. 

Your otherwise admirable filtering system is taking away valuable service from members in our community. 

Please fix this.

Sincerely,

David [Edited: "Personal Information"]