Your email service blocked COMCAST? One of the biggest ISP's in the US? Are they retarded?
Having worked for a US ISP, I can tell you that comcast gets on blocklists all the time -- it's insane how much spam originates on their network.
Having worked for a US ISP, I can tell you that comcast gets on blocklists all the time -- it's insane how much spam originates on their network.