Prohibit Sending Emails to Distribution Group at specific times

Hi team,
I have a request from my company to prohibit certain users from sending emails to Specific Distribution group at certain times.(12AM-7AM)
Any help would be appreciated.
Regards

Hi,
Based on my research, there is no feature in Exchange server to directly meet your requirement: reject specific users sending emails to specific distribution group at specific times.
We can use transport rule in Exchange 2007 and later version to achieve Reject specific users sending emails to specific distribution group. Create a rule in Exchange EMC:
Apply rule to messages
from "[email protected]" or "[email protected]"
and sent to "[email protected]"
send "cannot send messages to this group" to sender with "5.7.1"
About schedule the transport rules, there is no feature in Exchange supporting it. I find an article about scheduling a transport rule by using task schedule in Server manager. Just for your reference:
http://alanhardisty.wordpress.com/2012/01/17/schedule-a-transport-rule-to-be-enabled-or-disabled-at-a-specific-time-of-day-day-of-the-week/
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality,
safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.
Thanks,
Winnie Liang
TechNet Community Support

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Effective Permissions to send email to distribution group having "only senders in the following list"

Our environment is a mixed Exchange 2007 and Exchange 2010 server environment, still in transition (after 4 years). Users have Exchange 2007 mailboxes. A recent problem has been reported in a distribution group access model that has been working without
complaint for several years.
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When designed, we thought that when [email protected] sends an email to [email protected] it would be resolved to the user members of GroupC and delivered to everyone ([email protected], [email protected], [email protected], [email protected]). (While
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What we are experiencing is that users [email protected] and [email protected] receive the original email. Users [email protected], [email protected] do not receive the email. [email protected] receives an email "Undeliverable: test
Delivery has failed to these recipients or distribution lists:
[email protected]
Your message wasn't delivered because of security policies. Microsoft will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator. Sent by Microsoft Exchange Server 2007.
Diagnostic information for administrators
Generating server: mail3.domain.com
[email protected]
#550 5.7.1 RESOLVER.RST.NotAuthorized; not authorized ##
Original message headers:
Received: from MAIL7.domain.com ([::1]) by mail3.domain.com ([::1]) with
mapi; Mon 9 Mar 2015 07:00:30 -500
Content-Type: application/ms-tnef;name="winmail.dat"
Content-Transfer-Encoding: binary
From: Jane Doe <[email protected]>
To: GroupC <[email protected]>
Date: Mon 9 Mar 2015 07:00:29 -500
Subject: test
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Does Exchange resolve the "To" distribution group to member mailboxes for delivery purposes, or does it walk the subordinate child groups and check security at each level?
Is this a configurable behavior that may have recently changed as we have a "new" Exchange Admin poking around?
Might this be related to the mixed Exchange 2007 / 2010 environment?
Is there a way to obtain "effective permissions" for delivery restrictions?
emc2

Hi,
From your description, I would like to verify if you have done some changes for GroupB distribution group. Ensure that "[email protected]" is added to the "accept list" in GroupB's message delivery
restrictions.
What's more, are GroupA GroupB and GroupC Exchange 2010 distribution groups?
Best regards,
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 [email protected]
Amy Wang
TechNet Community Support

Send Emails to Distribution Group

Hi All,
I have a scenario where we need to create one distribution group and 4 users in that distribution group. There are almost 70 companies who will send email to this distribution group.
Now i want to achieve below goals,
1) lets support i create an distribution group [email protected] and add 4 members in this distribution group.
user1, user2, user3,user4
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Hi Zeeshan Butt,
Agree with the above suggestion, transport rule can achieve your requirement.
The sender address matches(the sender’s domain is)
The recipient address matches [email protected]
Redirect the message to user3 & user4
Here are some references you can refer to:
Transport Rule Predicates:
http://technet.microsoft.com/en-us/library/dd638183(v=exchg.150).aspx
Transport Rule Actions:
http://technet.microsoft.com/en-us/library/aa998315(v=exchg.150).aspx
Manage Transport Rules:
http://technet.microsoft.com/en-us/library/jj657505(v=exchg.150).aspx
If you have any question, please feel free to let me know.
Thanks,
Angela
Angela Shi
TechNet Community Support

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Hi Syed,
According to my research and test, I agree with Vasil.
For example, Distribution Group1 is managed by A, but configured that only accept message from B.
When A send an e-mail to Distribution Group1, it will not display an mail-tips to indicate that this account don’t have permission to send to this group. When sending out, it will be automatically receive an Undeliverable e-mail which display that”#550 5.7.1
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Best Regards,
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ARORA

Agree with Zarko. But when you add contact for that external user and allow only that sender, the DL will not receive emails from any other users (internal or external).
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below technet article for more details.
http://technet.microsoft.com/en-us/library/bb124405(EXCHG.80).aspx

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Prohibit Sending Emails to Distribution Group at specific times

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