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ASPX Email Form send without authentication?

Discussion in 'E-mail Discussion' started by odiego, Oct 10, 2007.

  1. odiego

    odiego Registered

    Oct 4, 2007
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    Hi all,

    I have an aspx form I am using to test the ability to send confirmation e-mails.

    On the From: i have

    and here's my question:

    When I use (w/o authentication) and have a To: address as (someone within my server) eventhough my server requires Authentication, the message comes thru without with no problem.

    But if I use a To: address as (outside my server) it does not work, gives me 550 error. Which makes sense...

    How come I can send an e-mail to a 'valid; e-mail on without authentication?

    Thanks all for your help on the forum!!
  2. mtindor

    mtindor Well-Known Member

    Sep 14, 2004
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    inside a catfish
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    Root Administrator
    This is by design. Because exim by default allows you to send mail to domains hosted on your server without requiring authentication.

    Think about it - If it required authentication of the sender before allowing reception of mail to domains that are hosted on the server, nobody in the outside world would ever be able to send mail to domains hosted on that server without first smtp authenticating :)


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