in message
I would like the sender who is blocked to receive a message saying
they are
blocked. Can this be done?
Blocked WHERE? At the SMTP mail host to which the sender connects to
send you their e-mail? Then yes, their sending mail host will get a
rejection when your receiving mail host refuses to accept e-mail from
that blocked sending mail host - but only if the rejection by the
receiving mail host is performed DURING the mail session with the
sending mail host (which is how a properly configured mail host would
behave). If the receiving mail host is misconfigured to accept
e-mails, end the mail session with the sending mail host, and then
figure out if the e-mail is deliverable and tries to send back an NDR
(non-delivery report), all it has are the headers in that received
e-mail. If spam, those headers are bogus so the misconfigured
receiving mail host will send the NDR back to an invalid,
non-existent, or wrong e-mail address.
If you are blocking then what happens depends entirely on what you
configure your e-mail client to do. You never said HOW you are doing
the blocking. For as vague is your post, maybe you are using a
shotgun to blast your computer to bits when you get an e-mail that you
don't want and then hooking up a new computer to get the next e-mail.
Read:
http://66.39.69.143/goodpost.htm
http://support.microsoft.com/kb/555375
http://users.tpg.com.au/bzyhjr/liszt.html