Here are a few simple steps that should help resolve the exchange 0x800ccc79 issue.
I have a problem with all authentications from Outlook Express to Exchange 2003 SMTP server.
When I try to send an Outlook Express email from a client connected to the same LAN as mail server n, I can only send email using the mail server’s local IP address. If I specify an SMTP server as the Exchange server’s most public address, I can only send messages to the mailboxes that I specify.They are on the same mail server.
When I send an absolute email to an external email list, I only get this error:
Unable to send message there. Uno dei destinatari is not for Ã¨ stato accettato dal server. Email without registration Ã¨ Href=”mailto:[email protected] “