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550 5.7.1 Requested action not taken: message refused RRS feed

  • Question

  • Dear All

    In our exchange 2013  enviroemnt  some of the external users complains that their email got bounced  with following error message

    550 5.7.1 Requested action not taken: message refused.

    What may be reason.?

    It happening only  for few users.

    Kindly advice please.


    Ashraf

    Sunday, June 28, 2015 7:46 AM

Answers

  • There is some content filtering on your end blocking these emails
    Check the logs on your GW filters, Antispam filters and check your exchange content filters

    Also check  who is the NDR generating server

    MOst likely there must be some filtering on your end which is causing this issue

    Remember to mark as helpful if you find my contribution useful or as an answer if it does answer your question.That will encourage me - and others - to take time out to help you Check out my latest blog posts on http://exchangequery.com Thanks Sathish (MVP)

    • Marked as answer by P T Ashraf Monday, June 29, 2015 8:07 AM
    Sunday, June 28, 2015 8:13 AM

All replies

  • There is some content filtering on your end blocking these emails
    Check the logs on your GW filters, Antispam filters and check your exchange content filters

    Also check  who is the NDR generating server

    MOst likely there must be some filtering on your end which is causing this issue

    Remember to mark as helpful if you find my contribution useful or as an answer if it does answer your question.That will encourage me - and others - to take time out to help you Check out my latest blog posts on http://exchangequery.com Thanks Sathish (MVP)

    • Marked as answer by P T Ashraf Monday, June 29, 2015 8:07 AM
    Sunday, June 28, 2015 8:13 AM
  • Hi Ashraf,

    Thank you for your question.

    Did all emails get bound for the specific user?

    Did the email include the specific word or sentence?

    The error means the Exchange server refuse the message to deliver to internal, we could check if there are any transport rules or filter in Exchange server (include the Edge server), as Sathish’s said.

    In addition Sathish’s suggestion, we could check if there are third party software in organization to block email, for example Symantec Mail or others. We could rebuild the Edge subscription to check if the issue persist.

    We could also refer to the following links:

    http://blogs.technet.com/b/jhoward/archive/2005/10/11/412328.aspx

    https://social.technet.microsoft.com/Forums/exchange/en-US/fc36bdf9-1e50-447f-81fe-e626e3040af2/571-smtp550-571-message-rejected-as-spam-by-content-filtering-smtp?forum=exchangesvrsecuremessaginglegacy

    If there are any questions regarding this issue, please be free to let me know.

    Best Regard,

    Jim


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

    Jim Xu
    TechNet Community Support

    Monday, June 29, 2015 5:55 AM
  • In addition to Sathish & Jim below are some steps:

    A very common Exchange 2010 NDR, the cause is a permissions problem.  For some reason the sender is not allowed to email this account.
    Perhaps an anonymous user is trying to send mail to a distribution list.
    Alternatively, a user may have a manually created email address that does not match a System Policy.
    Check SMTP Virtual Server Access Tab.  Try checking this box: Allow computers which successfully authenticate to relay.
    Check the outgoing SMTP logs.
    Check: Mailbox – <Mailboxname> – Properties – Mail Flow Settings – Message delivery restrictions.
    Try disabling Windows-Integrated-Security.  Instead allow only standard authorization on the SMTP receiver on the Exchange 2010 server.

    ----------------------------------------------------------------------

    Remember to mark as helpful if you find my contribution useful or as an answer if it does answer your question.That will encourage me - and others - to take time out to help you Check out my latest blog posts @ Techrid.com

    Monday, June 29, 2015 6:24 AM
  • Dear Sathish

    Thanks for the instant response.

    Recently we installed Symantec Mail Security for Exchange 2013. After that it started. The raise a support  from Symantec and they informed that the error code 550 5.7.1 from Exchange and it is due to your Exchange Server issue.

    But it is not happening for all users /all emails for individual users.

    It is happening for some users for some specifc emails.

    How can get which content filtering policy is blocking this valid emails.

    Thanks in Advance

    Ashraf


    Ashraf

    Monday, June 29, 2015 8:14 AM