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550-Please turn on SMTP Authentication in your mail client

Discussion in 'E-mail Discussions' started by Vladimir Vasilev, Nov 1, 2016.

  1. Vladimir Vasilev

    Vladimir Vasilev Registered

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    Hello I am having strange problem. I am trying to send e-mail with php mail() function from my server but each time I am getting an error:

    ECDHE-RSA-AES256-GCM-SHA384:256 CV=no: SMTP error from remote mail server after RCPT TO:: 550-Please turn on SMTP Authentication in your mail client.\n550-(web.example.com) [69.87.xxx.xxx]:43902 is not permitted t

    The first time when I was testing this I've got a few e-mails inside gmail and after that non of them is sent. Always I get this error.

    some more log-information:

    Code:
    Sender Host: localhost
    
    Sender IP: 127.0.0.1
    
    Authentication: localuser
    
    Spam Score: 0
    
    Router: lookuphost
    
    Transport: remote_smtp
    
    Out Time: Nov 1, 2016 2:47:14 PM
    
    ID: 1c1e5Z0001XhMY
    
    Delivery Host: gmailsmtpin.l.google.com
    
    Delivery IP: 74.125.28.27
    
    Any help will be very welcome.

    Another error which I've got is the following:

    SMTP error from remote mail server after initial connection: 554 bosimpinc14 bizsmtp Connection rejected. Reverse DNS for 69.87.xxx.xxx does not exist.
     
    #1 Vladimir Vasilev, Nov 1, 2016
    Last edited by a moderator: Nov 1, 2016
  2. ruzbehraja

    ruzbehraja Well-Known Member

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    Use SMTP Authentication by adding a username and password of an email account on your cpanel server into the web form you are using to send.
     
  3. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    Yes, as mentioned in the previous post, check to ensure your PHP script is configured to send with SMTP authentication.

    Regarding RDNS, you should ask your hosting provider to ensure RDNS is configured for your server's IP address pointing to the server's hostname.

    Thank you.
     
  4. Vladimir Vasilev

    Vladimir Vasilev Registered

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    I've got this problem solved, What I am facing now is I can send e-mails to gmail.com for example but when I try to send to other e-mail I get the other error always: SMTP error from remote mail server after initial connection: 554 bosimpinc11 bizsmtp Connection rejected. Reverse DNS for 1.2.3.4 does not exist.

    Any suggestions on this ?
     
    #4 Vladimir Vasilev, Nov 2, 2016
    Last edited by a moderator: Nov 2, 2016
  5. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    Yes, you should contact your hosting provider and ask them to configure RDNS for your server's IP address pointing to the server's hostname.

    Thank you.
     
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