The server response was: 503 This mail server requires authentication when attempting

Discussion in 'ASP.NET / ASP.NET Core' started by dba123, Sep 7, 2006.

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  1. dba123

    dba123

    I am using System.Web.Mail. Ever since discountasp did their mail server upgrade or change or whatever, I get this error when trying to use my SendMail function in VB.NET. It was working fine before the mail server change:



    The server rejected one or more recipient addresses. The server response was: 503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.
     
    dba123, Sep 7, 2006
    #1
  2. joelnet

    joelnet

    You should be using localhost as your SMTP server, if you were, this change wouldn't have affected you.


    Joel Thoms
    DiscountASP.NET
    http://www.DiscountASP.NET
     
    joelnet, Sep 7, 2006
    #2
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