I am insanely disappointed.
Your rep told me I would have no issues setting up a mail server.
I have done so, it is VERY secure, and ALL of my emails are bouncing due to a Spamhaus blacklist.
Now I find out all your dynamic IPs are blacklisted.
I think I might cancel this, go back to residential, and go back to using an AWS instance for my mail server. Very, very disappointed in Comcast right now.
Thank you for reaching out to us about setting up an email server. I'm happy to help you get this setup with a static IP address. We don't control the listing of IP addresses on blacklists. You would have to work directly with the blacklister to have the IP address removed. However, in most cases to setup a secure mail server you will need to have a static IP address. Dynamic IP addresses will cause problems in setting up your mail server and cause problems with delivery of mail.
Spamhaus says you guys set the block and they can not fix it, since it is set on your end, on the entire range.
I have since purchased a static IP but I am very very disappointed in Comcast, you are essentially extorting your customers.
We do not control blacklists, what block an IP address belongs to is separate and not related with it being listed on a blacklist. However, typically most ISPs dynamic IP addresses are listed on a blacklist as they may be assigned to anyone and can anonymously be used for malicious behavior. Companys that manage blacklists are aware of this and will add these IP addresses to their blacklist to protect against malicious behavior. While I can understand your disappointment, this is in no way controlled by Comcast. Let me know if you have any other concerns.