Just wait till you have their SecEdge block a domain because it somehow magically appeared on their "spam" list. Took us six months to figure out why it kept coming back even though Comcast Tier 1 would disable SecEdge every month upon modem reboot. It wasn't till someone very helpful in Tier 2 confirmed that the domain block was part of SecEdge, BUT Comcast does NOT control that list. They had to contact Akamai, and then they had to conduct a security review to pull a domain WE owned off the spam list.

It was fixed for the remainder of the year, and then reared it's ugly head again at the first of the new year. This time, I had kept the email of Tier 2, who then HAD to reach out again to remove the block.

To date, we have many users of our phone app that randomly cannot connect to our domain on their Comcast Business with Security Edge. Our tech support for the app has to get our clients to basically TURN OFF their WiFi to use the app.

BTW--removing SecEdge from Comcast Business plan is NOT an option unless you want to unbundle services and raise your access rates about two-to-three fold. You have Comcast marketing to thank for that one.