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550-Unrouteable address – What causes it and how to fix it in Exim, cPanel

Discussion in 'E-mail Discussion' started by monologie, May 24, 2017.

  1. monologie

    monologie Registered

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    Hi everyone,

    I can't send mails to certain email addresses (.net, .org) , I receive the next message.

    [Removed Output that included real domain names]

    Diagnostic-Code: smtp; 501 5.0.1 Emetteur invalide. Invalid Sender. LPN007_405


    Does anyone know how I can resolve these error?

    Many thanks
     
  2. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    Is this happening when sending email from your cPanel server to multiple remote mail servers? If so, do you notice any output in /var/log/exim_mainlog for the affected messages? EX:

    Code:
    exigrep user@remote-domain /var/log/exim_mainlog
    Thank you.
     
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  3. monologie

    monologie Registered

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    Hello,

    Thanks for the reply, when I send a test email to the following address: user@example.net, I receive the following error in the file log (exim_mainlog)

    Code:
    2017-05-26 17:26:02 1dEH7p-0003hT-UI ** user@example.net R=dkim_lookuphost T=dkim_remote_smtp H=smtp.example.com [87.97.xxx.xxx]: SMTP error from remote mail server after RCPT TO:<user@example.net>: 550 Unrouteable sender address 
     
    #3 monologie, May 26, 2017
    Last edited by a moderator: May 30, 2017
  4. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    That message suggests the email account you are sending to is not routable. To clarify, are you sending to this email account from your server, or is this domain name hosted on your server?

    Thank you.
     
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  5. monologie

    monologie Registered

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    Hello,

    I send email from my server to the customer address: user@example.net. And I receive the following error in the file log (exim_mainlog).

    Code:
    SMTP error from remote mail server after RCPT TO:<user@example.net>: 550 Unrouteable sender address 
     
    #5 monologie, May 30, 2017
    Last edited by a moderator: May 30, 2017
  6. Infopro

    Infopro cPanel Sr. Product Evangelist
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    Twitter:
    That domain, now removed from your posts, is a disposable email address website. You might want to contact your customer and ask them for another email address that actually works.
     
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