said by supergeeky:
Is your Comcast connection really your own account?
I have come across (more than once, sadly) where another "ISP/telco" was essentially reselling a Comcast business account, meaning they put a Comcast modem in the basement of a building, with a switch, then gave different companies in the building their own "dedicated" Ethernet run that went back to that switch, they also "gave" each tenant who signed up for "their" service one of the static IP's from the Comcast account. Another company in the building was spamming, and thus Comcast blocked port 25 for all the IPs on the account.
I'd suggest you contact Comcast and have them help you. They may just turn it back on without asking allot of questions.
Yes, it is my own, in my house, no other user on that Modem.
I don't mind if port 25 is blocked. I do not use Comcast's SMTP service anyway and I access all my email accounts vial webmail (gmail).. Or use my email's provider secure SMTP server via another port.--