I'm going to throw my two cents in here. I see a couple of other relevant threads but this one's the most recent, so here goes:
I'm running XP Home SP2. I use Thunderbird. I just uninstalled AVG 7.5 and installed Avast. Thereafter I too was unable to send or receive email.
"Sending of message failed. The message could not be sent because connecting to SMTP server 127.0.0.1 failed." Ditto for incoming.
In Thunderbird I had to go to
Tools |
Account Settings |
Outgoing Server (SMTP) |
Edit | and under
Server Name type in
smtp.netzero.com. Likewise under
Server Settings |
Server Name I typed in
pop.netzero.com. That did the trick.
(I had entered 127.0.0.1 previously as described here:
http://www.theeldergeek.com/forum/index.php?showtopic=7985.)
I also got this, which I have never seen before:
However it all seems to be working at the moment, so I guess I'm good to go. Stupid computers.