Hello, I have got the same problem.
I did literally everything in the following support tip:
Q: avast! 4 changes my POP3 and SMPT settings to 127.0.0.1 and also the names of my e-mail accounts are modified, so I cannot send any messages. What is wrong?
A: avast! needs to change that settings, otherwise it couldn´t scan your e-mail messages. But it shoudln´t cause any problems with sending or receiving messages. If you have problems, however, follow these steps:
Close Outlook Express.
Start Mail Protection Wizard and select "Automatically remove protection from all my accounts.
Start Outlook Express.
In Outlook Express, check the server addresses and user name. If you don´t know the appropriate values, ask your Internet Service Provider.
Close Outlook Express (very important!!!).
Start Mail Protection Wizard again.
Select "Set up the protection manually".
Select "I don´t use MS Outlook..."
Follow the instructions.
At the end you can start Outlook Express again. The addresses of POP and SMTP servers will be changed and your login name modified, but it will work.
In my case, it did not work. :'(
I use Win98 SE, Outlook Express 6 Service Pack 1 Version
I receive error messages with correct spelling.
Some of my accounts require "My server requires authentication" tick but neither they, nor the other ones work.
Why is that, any ideas?
This is error message in my language. It is the same of Susan's.
Sunucuya ba?lanmaya çal???l?rken bir TCP/IP hatas? oldu. Hesap: '.Marjinal', Sunucu: '127.0.0.1', ?leti?im Kurallar?: POP3, Ba?lant? Noktas?: 110, Güvenli(SSL): Hay?r, Hata numaras?: 0x800CCC15