More and more ISP’s are starting to blacklist various IPs and email addresses. I am all for eliminating spam but not at the expense of legitimate businesses. Three well known ISPs that are doing this are AOL, Comcast and Earthlink. So if you use an email address for your business that is @aol.com, @comcast.com or @comcast.net, and finally @earthlink.net you may very well not receive email from clients.

Eathlink will often send someone an email stating that this person only accepts email from approved addresses with a link to send a message to add your address. Let’s put it this way if someone contacts me and I reply and get such a message well I might request approval, but 9 of 10 times I won’t.

If you have a web based business use an email address with the domain name in it, and don’t have it forwarded to another email address. Why risk losing a customer?

Comcast and the problems one small ISP had http://www.techpro.com/content/not_comcastic.aspx.