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Odd Spam flagging behavior on new messages only RRS feed

  • Question

  • My company doesn't work with another company and haven't had issues of email deliveries between any of their folks to any of our folks in the past until recently. They have one person there who when she sends a new email to us it will get flagged as spam but anytime she replies to an existing email thread it comes through okay. 

    For instance today, 

    she sent a new email, that got flagged and went to junk. 

    she replied to an email from Friday, that went to inbox

    a different employee sent me an email with an attachment and it came to my inbox. 

    Right off the bat the first thing I'm noticing when comparing the headers from those three emails above is the last line of the header files. 

    The one being flagged spam has:

    X-Microsoft-Antispam-Mailbox-Delivery: ucf:0;jmr:1;ex:0;auth:0;dest:J;ENG:(20160513016)(750127)(520011016)(944506383)(944626516);

    Yet the reply and the email from someone else in the company I get:

    X-Microsoft-Antispam-Mailbox-Delivery: ucf:0;jmr:0;ex:0;auth:0;dest:I;ENG:(20160514016)(750127)(520011016)(944506383)(944626516);

    So I'm seeing the JMR is hitting 1 on the new emails and going dest: J (assuming Junk)

    vs. the other two emails getting a JMR of 0 and going dest: I (assuming Inbox)

    The other thing I'm noticing is a few lines up from that, the one that gets Spam has: 

    X-Ms-Exchange-Organization-Scl: 6

    Where as the  ones that don't get trapped has:

    X-Ms-Exchange-Organization-Scl: 1

    Can provide more if it might help troubleshoot why this occurs and if the fix needs to be here on our Exchange or over there on theirs. 

    THANKS!

    Thursday, February 13, 2020 12:49 AM

All replies

  • Hi,

    To check whether this is a Outlook client issue or server issue, please ask her to exit Outlook desktop client and send a test email on the web mail and see if the issue can be reproduced.

    If she is the only one in her organization has this problem, besides, she will always encounter this problem when sending an email to anyone in your organization. Then this should be a issue only related to her.

    Please check if she has been added to the blocked sender list by your organization admin.

    Any update, please feel free to post back.

    Regards,

    Aidan Wang


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Thursday, February 13, 2020 8:36 AM
  • Hi,

    Have you got the issue fixed?

    Please try my suggestions and let me know the results.

    Regards,

    Aidan Wang


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Friday, February 14, 2020 8:09 AM