I have been trying to send e-mail all day. It is not able even to leave my Outbox. (I use Outlook Express 6.) The message I get is this:
An unknown error has occurred. Subject '<subject>', Account: 'CejCo', Server: 'mail.cejco.com', Protocol: SMTP, Server Response: '421 Unexpected failure, please try later', Port: 25, Secure(SSL): No, Server Error: 421, Error Number: 0x800CCC67
I did a Google search, and it returned the following page: http://support.microsoft.com/default...NoWebContent=1
According to this Microsoft page, the server (HFW) needs to "increase the maximum number of inbound connections for the Internet Mail Service."
Please let me know when this problem has been solved. Or if anyone knows that there's a setting I need to change on this end (seems unlikely), then let me know what to do from here.