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Question about SPF (Sender Id Agent)

    Question

  • Hello everyone.

    Messages from sender user@gup.energy.crimea.ru are rejected by Sender Id Agent. Reason is "MissingPRA". Sender IP address is: 178.34.185.158. 

    But according to mxtoolbox.com and nslookup SPF-record for this domain is correct and IP address mentioned below is permitted to send messages for this domain.

    May be there is something not-obvious in Sender Id Agent altorithm?

    Details (Get-AgentLog):

    Timestamp       : 26.10.2016 11:31:25
    SessionId       : 08D3F9E31C32B3F5
    IPAddress       : 178.34.185.158
    MessageId       : 
    P1FromAddress   : user@gup.energy.crimea.ru
    P2FromAddresses : {user@gup.energy.crimea.ru}
    Recipients      : {user@domain.ru}
    Agent           : Sender Id Agent
    Event           : OnEndOfHeaders
    Action          : RejectMessage
    SmtpResponse    : 550 5.7.1 Missing purported responsible address
    Reason          : MissingPRA
    ReasonData      : No valid PRA
    Diagnostics     : 
    NetworkMsgID    : 00000000-0000-0000-0000-000000000000
    TenantID        : 00000000-0000-0000-0000-000000000000


    Thursday, October 27, 2016 5:08 PM

Answers

  • The reason is: incorrect message headers.

    Details:

    https://social.technet.microsoft.com/Forums/en-US/447cbdc7-e20f-46e0-9a36-7ccba1e9d074/550-571-missing-purported-responsible-address?forum=exchangesvrsecuremessaginglegacy


    • Marked as answer by Turboon Thursday, October 27, 2016 6:02 PM
    • Edited by Turboon Thursday, October 27, 2016 6:02 PM
    Thursday, October 27, 2016 6:01 PM

All replies

  • The reason is: incorrect message headers.

    Details:

    https://social.technet.microsoft.com/Forums/en-US/447cbdc7-e20f-46e0-9a36-7ccba1e9d074/550-571-missing-purported-responsible-address?forum=exchangesvrsecuremessaginglegacy


    • Marked as answer by Turboon Thursday, October 27, 2016 6:02 PM
    • Edited by Turboon Thursday, October 27, 2016 6:02 PM
    Thursday, October 27, 2016 6:01 PM
  • Hi Turboon,

    Thanks  for your sharing, this would be beneficial to other community members.

    Best Regards,


    Niko Cheng
    TechNet Community Support


    Please remember to mark the replies as answers if they help and unmark them if they provide no help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Friday, October 28, 2016 9:53 AM
    Moderator