Mail error: reason: 550 5.0.0 You must use a valid mail server

From: Paul Gillen (gillen1951_at_yahoo.com)
Date: 11/13/03

  • Next message: Donald Tyler: "Sendmail keeping messages for domains its not responsible for."
    To: Red Hat User List <redhat-list@redhat.com>
    Date: Thu, 13 Nov 2003 12:11:13 -0800 (PST)
    
    

    A home-hobbyist tries to set up sendmail. (No, I'm
    sticking with sendmail for now for obscure reasons of
    my own, please spare us comments on alternatives.)

    Mail to redhat gets a "reason: 550 5.0.0 You must use
    a valid mail server" in response:

    ------------
    The original message was received at Thu, 13 Nov 2003
    14:25:15 -0500
    from paulgillen.riveralph.com [192.168.1.3]

       ----- The following addresses had permanent fatal
    errors -----
    <webmaster@redhat.com>
        (reason: 550 5.0.0 You must use a valid mail
    server)

       ----- Transcript of session follows -----
    ... while talking to mx1.redhat.com.:
    >>> MAIL From:<Paul_Gillen@RiverAlph.com>
    <<< 550 5.0.0 You must use a valid mail server
    554 5.0.0 Service unavailable

    -------------------------
    Reporting-MTA: dns; www.riveralph.com
    Received-From-MTA: DNS; paulgillen.riveralph.com
    Arrival-Date: Thu, 13 Nov 2003 14:25:15 -0500

    Final-Recipient: RFC822; webmaster@redhat.com
    Action: failed
    Status: 5.0.0
    Diagnostic-Code: SMTP; 550 5.0.0 You must use a valid
    mail server
    Last-Attempt-Date: Thu, 13 Nov 2003 14:25:16 -0500

    ====================================
    Presumably this is all DNS related.

    Noting:
       Reporting-MTA: dns; www.riveralph.com
       Received-From-MTA: DNS; paulgillen.riveralph.com
    Using nslookup (I know, I know) and setting the server
    to an Earthlink DNS server, for www.riveralph.com we
    get:
    > set type=any
    > www.riveralph.com
    Server: [207.69.188.185]
    Address: 207.69.188.185

    Non-authoritative answer:
    www.riveralph.com internet address =
    66.47.111.74

    riveralph.com nameserver = dns11.register.com
    riveralph.com nameserver = dns12.register.com
    riveralph.com nameserver = www.riveralph.com
    dns11.register.com internet address =
    216.21.234.76
    dns12.register.com internet address =
    216.21.226.76
    www.riveralph.com internet address =
    66.47.111.74

    For paulgillen.riveralph.com we get:

    > paulgillen.riveralph.com
    Server: [207.69.188.185]
    Address: 207.69.188.185

    Non-authoritative answer:
    paulgillen.riveralph.com internet address =
    192.168.1.3

    riveralph.com nameserver = 207.69.188.186
    riveralph.com nameserver = ns.riveralph.com
    riveralph.com nameserver = 207.69.188.185
    >

    Looking for the mail exhanger we get:

    > set type=mx
    > riveralph.com
    Server: [207.69.188.185]
    Address: 207.69.188.185

    Non-authoritative answer:
    riveralph.com MX preference = 10, mail exchanger =
    www.riveralph.com

    riveralph.com nameserver = ns.riveralph.com
    riveralph.com nameserver = 207.69.188.185
    riveralph.com nameserver = 207.69.188.186
    >

    ================================
    Anyhow, both the MTAs, "www" the SMTP host and
    "paulgillen" the POP3 client, appear to be valid and
    resolvable.

    What am I missing? (Besides a few marbles for even
    attempting this.)

    =Paul=

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  • Next message: Donald Tyler: "Sendmail keeping messages for domains its not responsible for."

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