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503 This mail server requires authentication when attempting to send to a non-local

Discussion in 'Plesk for Windows - 8.x and Older' started by garryk, Sep 18, 2008.

  1. garryk

    garryk Guest


    When I configure Outlook I'm having problem sending emails. Receivin is ok.

    Going by this previous post I found I think there is someway of amending this but I think that this post was referring to an earlier version of Plesk. http://forum.swsoft.com/showthread.php?t=16607

    Any ideas how to rectify this on Plesk 8.4.0 for Windows?

  2. prince

    prince Regular Pleskian

    Aug 16, 2006
    Likes Received:
    smtp auth

    The error occurs when smtp authentication is not enabled in your mail client; in your case outlook.

    Make sure that "outgoing server requires authentication" checkbox is selected and also
    give a valid email address and password for authentication.

    If it doesn't work after having these options enabled, server side settings has to be checked.