This is a difficult situation when a sender is trying to send youmail on your Comcast email address, but it won't deliver. The reason is very
simple; Comcast don't allow residential or dynamic IP addresses to directly
connect to its mail servers. Comcast mail server will filter such mails and you
sender will get a mail delivery failure message. To fix this
error ES0000010, you need to ask your sender to connect its mail provider toreview the settings of your email server to ensure it won't continue to block
it.
Read more here :-
http://www.supportforhelps-33.webself.net/blog
