I cant send messages through outlook 2007 just receive (0x800ccc80)

421 Authorization failed: please authenticate by doing get message first using outlook 2007 rediffmail configured received mail but cant send mail please help

Is this when trying to send e-mail via outlook? Check the account settings in outlook to be sure the authentication mechanism is supported by your email provider

Outlook 2007 is stricter than 2003 about SMTP authentication. It could be the case that 2003 tried automatically to connect without authentication when authentication failed, while 2007 throws an error.

Please verify the settings for authentication in your account, and uncheck the box “My outgoing server (SMTP) requires authentication", on the "Outgoing Server" tab.

Literally it means that Outlook tried authenticating with some authentication methods (password, encrypted password, and so on) but the server did not support any of them.

More likely, either the server did not send the list of supported methods, or something in between ate them. Check your antivirus settings, and verify that no encryption or advanced authentication is needed in the account settings.

If it still doesn't work, turn on debug recording in the Outlook advanced features and try again:

http://support.microsoft.com/kb/831053/en-us

When posting the debug log, keep in mind that it could contain sensitive information such as your email password in obfuscated format, and anyone reading the log could be able to decode it.

do disk defrag and clean up

Close outlook and search for *.SRS files once you find the files delete it open Outlook

srs files are for sending and recieving mails in Outlook

go to tools, option, mail setup, send and receive make sure the send imemdiatly when connect is checked.
back out the outlook and click on send and receive on the tool bar.
you might have to click on send/reciver on the tool bar few times in order for the porgram to configure what you want.

hi

you need to rpc in outlook if you are using exchange server

Go to Tools > Account Settings > Double click the account > More Settings > Outgoing Server > ‘Log on to incoming mail server before sending mail’.

if the message had a file or picture in it sometimes you will have to zip it to compress it and secure it as it may be caused by the way the programme sends packets of information.