SBS2003 SMTP Authentication Required

Posted on 2007-10-08
Last Modified: 2010-05-18
I have setup an sbs2003 server with exchange, I configured the pop3 connector to pickup individual mails, I get this error whenever any one tries to send out email
< #5.5.0 smtp;530 SMTP authentication is required.>
Question by:jeqwan
    LVL 21

    Expert Comment

    I think you don't have a problem with Pop3 connector, maibe you can explain a little bit on detail the config for SMTP virtual server and SMTP connector.

    LVL 104

    Accepted Solution

    That is an SMTP error.
    You need to check with your ISP whether they need authentication to go through their SMTP servers. They most likely do. If that is the case then you will need to adjust the SMTP Connector in Exchange System Manager to authenticate. On the properties of the SMTP Connector choose the Advanced tab and then Outbound Security. Set the authentication type to basic and enter the information your ISP needs.


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