learn.microsoft.com Open in urlscan Pro
184.30.230.100  Public Scan

Form analysis
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Name: site-header-search-form-mobile — GET /is-is/search/

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    <!---->
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</form>

Name: site-header-search-form — GET /is-is/search/

<form class="flex-grow-1" method="GET" role="search" id="ms--site-header-search-form" data-bi-name="site-header-search-form" name="site-header-search-form" aria-label="Leita" action="/is-is/search/">
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    <!---->
  </div>
  <!-- mobile safari will not dispatch submit event unless there's a submit button that is not display:none -->
  <button type="submit" class="visually-hidden" tabindex="-1" aria-hidden="true"></button>
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javascript:

<form action="javascript:" role="search" aria-label="Leita" class="margin-bottom-xxs"><label class="visually-hidden" for="ax-0">Leita</label>
  <div class="autocomplete display-block" data-bi-name="autocomplete"><!---->
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      <span hidden="" id="ms--ax-0-description"> Tillögur munu síast þegar þú skrifar </span>
    </div>
    <ul role="listbox" id="ax-1-listbox" data-test-id="ax-0-listbox" class="autocomplete-suggestions is-vertically-scrollable padding-xxs " aria-label="Tillögur" hidden="">
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    <!---->
  </div>
</form>

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FIX NDR ERROR "550 4.4.7" IN EXCHANGE ONLINE

 * Grein
 * 01/24/2024
 * 4 framlagsveitendur

Athugasemdir


Í ÞESSARI GREIN

    
 1. Why did I get this bounce message?
    
 2. I got this bounce message. How do I fix it?
    
 3. I'm an email admin. How do I fix this?
    
 4. Causes for error code 4.4.7
    
 5. Details for error code 5.1.0
    
 6. Still need help with error code 4.4.7?
    
 7. See also
    

Sýna 3 til viðbótar

Mikilvægt

Mail flow rules are now available in the new Exchange admin center. Try it now!

It's frustrating when you get an error after sending an email message. This
article describes what you can do if you see error code 550 4.4.7 in a
non-delivery report (also known as an NDR, bounce message, delivery status
notification, or DSN).


WHY DID I GET THIS BOUNCE MESSAGE?

For more information, see the Causes for error code 4.4.7 section later in this
article.

Use the information in the NDR to help you decide how to fix the problem.

Stækka töflu

            I got this bounce message. How do I fix it? I'm an email admin. How
do I fix this? Causes for error code 4.4.7


I GOT THIS BOUNCE MESSAGE. HOW DO I FIX IT?

This section contains the steps that you can try to fix the problem yourself.

If the steps in this section don't fix the problem for you, contact your email
admin and refer them to this article so they can try to resolve the issue for
you.

If you get this error only for messages that you sent to a specific domain (for
example, only recipients in the @fabrikam.com domain), the problem is likely
with that destination domain. For example:

 * Temporary network or internet connection issues in the destination domain.

 * Aggressive anti-spam settings in the destination domain that block legitimate
   senders (for example, all senders from any domain in Exchange Online).

If you suspect a problem with the destination domain, notify the recipient (by
phone, in person, etc.) with the information in the NDR so they can notify their
email admins:

 * The name of the email mail server in the destination domain, and the error
   message that's returned by the email server.

 * The number of delivery attempts made that were made by the datacenter server
   in Exchange Online, and how long it tried to reach the remote server.

The email admins in the destination domain will need to investigate the issue.
Possible solutions might include:

 * Stop blocking messages from Exchange Online or specifically allow messages
   from senders in your domain.

 * Contact the support channels for their email server or service. Microsoft
   support might also be able to help.


I'M AN EMAIL ADMIN. HOW DO I FIX THIS?

If the admins in the destination domain determine the problem isn't on their
end, the solution might be related the configuration of your Exchange Online
organization (or also your on-premises Exchange organization if you're in a
hybrid deployment).

Here are some steps for you to try:

 * Solution 1: The MX record for your domain might be missing or incorrect. Get
   more information about how MX records work at DNS basics.

 * Solution 2: Test your MX record and your organization's ability to send mail
   by using the Outbound SMTP Email test in the Microsoft Remote Connectivity
   Analyzer.

 * Solution 3: The Sender Policy Framework (SPF) record for your domain might be
   incomplete, and might not include all email sources for your domain. For more
   information, see Set up SPF to help prevent spoofing.

 * Solution 4: Your domain might have expired due to non-payment. Verify with
   your domain registrar that your domain is active and not expired.

 * Solution 5: If the recipient is in your on-premises Exchange organization in
   a hybrid deployment, there might be a problem with your hybrid configuration.
   Give the information in the NDR to your on-premises Exchange administrators.
   They might need to rerun the Hybrid Configuration Wizard due to changes in
   their on-premises IP addresses or firewall rules.

For more information about message routing in hybrid deployments, see Transport
routing in Exchange hybrid deployments.


CAUSES FOR ERROR CODE 4.4.7

When Exchange Online attempts to deliver a message, the destination email might
be unable or unwilling to accept the message. This can result in a temporary
4_.x.x_ error code from the destination email server (instead of a permanent
5.x.x error code that indicates the message was rejected). Exchange Online
repeatedly tries to deliver the message over 24 hours. Only after two days of
unsuccessful delivery attempts do the recipient receive this NDR.

The possible causes of this error are:

 * The destination email server is offline or unreachable.

 * The server won't accept delivery of the message.

 * A network problem is causing message delivery to time out.


DETAILS FOR ERROR CODE 5.1.0

The NDR from Exchange Online for this specific error might contain some or all
of the following information:

 * User information section
   
   * The server has tried to deliver this message, without success, and has
     stopped trying. Try sending this message again. If the problem continues,
     contact your help desk.

 * Diagnostic information for administrators section
   
   * #550 4.4.7 QUEUE.Expired; message expired ##
   
   * The message was considered too old by the rejecting system, either because
     it remained on that host too long or because the time-to-live value
     specified by the sender of the message was exceeded.
   
   * 450 4.7.0 Proxy session setup failed on Frontend with '451 4.4.0 Primary
     target IP address responded with ... Be sure to record the error that
     follows this string and the last end point attempted.


STILL NEED HELP WITH ERROR CODE 4.4.7?








SEE ALSO

Email non-delivery reports in Exchange Online





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


ATHUGASEMDIR

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FLEIRI TILFÖNG



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

Þjálfun

Eining

Examine email protection in Microsoft 365 - Training

This module examines how Exchange Online Protection (EOP) protects organizations
from phishing and spoofing. It also explores how EOP blocks spam, bulk email,
and malware before they arrive in users’ mailboxes.



Íslenska
Persónuverndarlöggjöf neytenda í Kaliforníu (CCPA) - Tákn fyrir afþökkun
Persónuverndarvalkostir þínir
Þema
 * Ljóst
 * Dökkt
 * Mikil birtuskil

 * Stjórna vefkökum
 * Fyrri útgáfur
 * Blogg
 * Leggja til efni
 * Persónuvernd
 * Notkunarskilmálar
 * Vörumerki
 * © Microsoft 2024


FLEIRI TILFÖNG



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

Þjálfun

Eining

Examine email protection in Microsoft 365 - Training

This module examines how Exchange Online Protection (EOP) protects organizations
from phishing and spoofing. It also explores how EOP blocks spam, bulk email,
and malware before they arrive in users’ mailboxes.




Í ÞESSARI GREIN



Íslenska
Persónuverndarlöggjöf neytenda í Kaliforníu (CCPA) - Tákn fyrir afþökkun
Persónuverndarvalkostir þínir
Þema
 * Ljóst
 * Dökkt
 * Mikil birtuskil

 * Stjórna vefkökum
 * Fyrri útgáfur
 * Blogg
 * Leggja til efni
 * Persónuvernd
 * Notkunarskilmálar
 * Vörumerki
 * © Microsoft 2024