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550-The mail server does not recognize ****@***** as a valid sender

Comments

9 comments

  • kodeslogic
    This error message occurs when the sender's e-mail account does not exist in cPanel, or when the domain's MX entry records are misconfigured in cPanel.
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  • cPJustinD
    Hello there! Just to be sure, is this occurring when sending or receiving mail? I found the following article that covers this issue regarding sent email in more detail that may help:
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  • Rel82me
    It occurs when I'm sending email. I've also noticed that when using webmail, some of the email sent ends up in the recipients junk/spam folder while other servers reject the email altogether.
    Hello there! Just to be sure, is this occurring when sending or receiving mail? I found the following article that covers this issue regarding sent email in more detail that may help:
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  • Rel82me
    It occurs when I'm sending email. I've also noticed that when using webmail, some of the email sent ends up in the recipients junk/spam folder while other servers reject the email altogether.

    Yes I verified that symptom and it's spot on.
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  • cPJustinD
    Are you seeing any issues with email deliverability for either the cPanel user or in WHM? What is the Email Deliverability feature within cPanel?
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  • Rel82me
    From email delivery reports in WHM of aosystemsgroup.us:
    email@domain.com Sep 13, 2021, 3:41:15 PM email@domain.com 1mPrpM-0001Vf-Ij TLS_AES_256_GCM_SHA384:256 CV=no: SMTP error from remote mail server after RCPT TO:: 550-Verification failed for \n550-The mail server does not recognize email@domain.comas a valid sender.\n550 Sender verify failed
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  • cPJustinD
    Hello again! Thank you for that information. I think it would be best to open a support ticket so that our analysts can review the issue more thoroughly and determine what exactly is occurring. You can submit a support request using the "Submit a ticket" link in my signature below. Please be sure to link this thread when opening the ticket and provide the ticket number here so that we can track the issue appropriately. If possible, please post the resolution on this thread as it may help other community members with similar issues.
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  • Rel82me
    Hi, Just waiting on some propagation to complete: https://whm.aosystemsgroup.us/cPanel_magic_revision_0/cjt/images/icons/error24.png
    email@domain.com Sep 14, 2021, 7:03:19 PM email@domain.com 1mQHSp-000hTt-QB TLS_AES_256_GCM_SHA384:256 CV=no: SMTP error from remote mail server after RCPT TO:: 550-Verification failed for \n550-The mail server does not recognize email@domain.com as a valid sender.\n550 Sender verify failed
    alt="warning"]https://whm.aosystemsgroup.us/cPanel_magic_revision_0/cjt/images/icons/warning24.png
    email@domain.com Sep 14, 2021, 7:01:19 PM email@domain.com 1mQHQV-000hMd-Sl retry time not reached for any host for 'mail.com'
    alt="warning"]https://whm.aosystemsgroup.us/cPanel_magic_revision_0/cjt/images/icons/warning24.png
    email@domain.com Sep 14, 2021, 6:45:18 PM email@domain.com 1mQHBR-000gjw-Ej retry time not reached for any host for 'mail.com'
    alt="warning"]https://whm.aosystemsgroup.us/cPanel_magic_revision_0/cjt/images/icons/warning24.png
    email@domain.com Sep 14, 2021, 6:45:18 PM email@domain.com 1mQHBR-000gjw-Ej retry time not reached for any host for 'mail.com'
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  • cPJustinD
    Thank you for that information. I see that you opened a ticket regarding this, that one of our analysts has replied to. There appears to be an issue with the MX records assigned to the domain in question. Please review the most recent reply to your existing ticket, and reply to the ticket if you have any other questions or concerns.
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