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Sender address rejected: MX or A record not found

Discussion in 'E-mail Discussion' started by Osama Tariq, May 5, 2016.

  1. Osama Tariq

    Osama Tariq Well-Known Member

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    Twitter:
    Email rejected from this domain "example.gc.ca", i have try several time from this email id "abc@domain.org.pk". Email sent successfully except "someusrname@example.gc.ca".
    When i have sent email to "someusrname@example.gc.ca" from any gmail or hotmail email id, it's sent successfully.


    Code:
    Event:    defer warning
    Sender User:    domainorg
    Sender Domain:    domain.org.pk
    Sender:    abc@domain.org.pk
    Sent Time:    May 5, 2016 5:44:17 PM
    Sender Host:    144.76.xxx.xx
    Sender IP:    ::1
    Authentication:    dovecot_login
    Spam Score:    0
    Recipient:    someusrname@example.gc.ca
    Delivered To:
    Delivery User:
    Delivery Domain:
    Router:    dkim_lookuphost
    Transport:    dkim_remote_smtp
    Out Time:    May 5, 2016 5:44:17 PM
    ID:    1ayIdg-002RnL-NV
    Delivery Host:    mail6.example.gc.ca
    Delivery IP:    198.103.xxx.xxx
    Size:    740 bytes
    Result:    SMTP error from remote mail server after RCPT TO:<someusrname@example.gc.ca>: 450 4.1.8 <abc@domain.org.pk>: Sender address rejected: MX or A record not found
    
     
    #1 Osama Tariq, May 5, 2016
    Last edited by a moderator: May 7, 2016
  2. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    You can use a website such as IntoDNS to verify the MX and A records for this domain name exist. Let us know the outcome.

    Thank you.
     
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  3. Malcolm Mcneil

    Malcolm Mcneil Registered

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    Did you ever get resolution for this. We have same issue with ***.gc.ca. Mail delayed up to 18 hours with that error message then suddenly delivered OK
     
  4. cPanelMichael

    cPanelMichael Forums Analyst
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    Did you encounter any issues with the DNS for the affected domain name? Do you notice any error messages or warnings when using a tool such as IntoDNS to check the DNS records?

    Thank you.
     
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  5. Malcolm Mcneil

    Malcolm Mcneil Registered

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    There were some errors with Nameservers but nothing crucial I would have thought. MX and A records are fine.
     
  6. cPanelMichael

    cPanelMichael Forums Analyst
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    Check to ensure the hostname of your system has not changed, and that a valid RDNS entry exists.

    Thank you.
     
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