In OE Goto tools - accounts - mail tab - double click on acct. - click on
advanced tab - Under Outgoing mail check 'This server requires a secure
connection(SSL)' only for outgoing server.

"csenn2" wrote:

I am running OE6 and XP sp 2. This started a couple of weeks ago. We use
charter for e-mail. Can receive mail fine and can send out to one recipient.
Cannot send to a distribution list (group). This particular group has
around 25 members. I get the message:

An unknown error has occurred. Subject 'Testing', Account:
'pop.charter.net', Server: 'mail.charter.net', Protocol: SMTP, Server
Response: '421 Message rejected', Port: 25, Secure(SSL): No, Server Error:
421, Error Number: 0x800CCC67

Does anyone have a clue? I have called charter, but their standard response
is if you can do it through the web client, then it isn't our problem. I
think it is something to do with their spam blocking, but maybe it could be
an outlook express problem.

Thanks in advance.