Hi all,
maybe this piece of information is helpful: I've got avast 4.5.523, Outlook Express 6 and *several* mail accounts. All accounts that use POP3 and IMAP work fine for incoming mails, all accounts with normal SMTP work fine for outgoing mails, but the single account that is configured with secured authentication cannot send mail. Sending works ok as soon as I stop the email scanner (provider).
The mail client simply times out and cannot connect. If it can connect, I get the same message about refused login that has been shown in this thread already. Strage thing is, that the timeout occurs even if I switch off outgoing mail scanning, so apparently that does not prevent avast from interfering with the secured SMTP connection. Please let me know if you need any further input.
Kind regards
robert