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  1. #1
    Join Date
    Apr 2006
    Posts
    66

    Question Relaying denied. IP name lookup failed [xx.xxx.xx.xxx]

    My VPS Config:
    centos with webmin
    mail program sendmail

    Its a newly configured VPS have a problem with smtp realying through outlook and other smtp programs. When i use smtp on outlook it give following error:

    The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was [email protected]'. Subject 'Outlook', Account: 'Testing', Server: 'xxxx.com', Protocol: SMTP, Server Response: '550 5.7.1 <[email protected]>... Relaying denied. IP name possibly forged [xx.xxx.xx.xxx]', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79

    I want to make outgoing authentication activate instead of allowing some iprange or domain for relaying through /etc/mail/access.

  2. #2
    Join Date
    Apr 2006
    Posts
    66
    I have googled a lot and found that i will have to do much to achive that. So i got a idea to have some built in smtp authentication mail program . Anyone know that ?

  3. #3
    Click Outgoing Server and place a checkmark next to My Outgoing Server (SMTP) requires authentication or click Servers and place a checkmark next to My server requires authentication.

    This behavior can also occur if the Domain Name System (DNS) feature is not configured correctly ensure that MX records point to the correct SMTP virtual server.

    Can you telnet the mailserverIP for port 25?
    Live Your DreamZ
    ~Besty

  4. #4
    Join Date
    Apr 2006
    Posts
    66
    i have problem with sendmail.

  5. #5
    Join Date
    Dec 2005
    Location
    Internet
    Posts
    1,337
    As besty said, please run the command telnet mailserverIP 25 in your command prompt and paste the results here.
    Senior Server Administrator

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