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Hi,
I have a user where he is unable to send an emails to external (internet) from his own mailbox. what could be the issue?. how can i resolved this. any idea.
when he is sending an email he is receiving an undeliverable email saying you dont have permissions to send.
Thanks
Pavan.
What is the exact NDR? Please post it here.
Are your mailboxes on-prem or in Office 365?
Hi Andy,
Delivery has failed to these recipients or groups:
anon@USER (anon@USER )
Your message wasn't delivered due to a permission or security issue. It may have been rejected by a moderator, the address may only accept e-mail from certain senders, or another restriction may be preventing delivery.
Diagnostic information for administrators:
Generating server: CasServer.com
anon@USER
Original message headers:
Received: from Mailbox ([]) by CasServer
Content-Type: application/ms-tnef; name="winmail.dat"
Content-Transfer-Encoding: binary
From: User@ourdomain.com
To: "anon@USER " <anon@USER >
Subject: FW: test
Thread-Topic: test
Thread-Index: AdYi57TTNpBPWKyUQ+mylA2CW5N7UAAADPGQ
Date: Tue, 5 May 2020 10:17:33 -0400
Message-ID: **********
References: ************
In-Reply-To:
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator: ****************
Our Mailboxes are in On_prem and the verison of exchange is 2016.
Do messages from your domain to the internet go out directly to the internet or do you smarthost all the messages to an outbound SMTP relay?
Looks like something after Exchange is rejecting that message.
IF this is a new user, it could be that the account needs to be added to some SMTP gateway in order to send out.
Can you post the message trace for a failed message? That way we can know for sure that its attempting to leave the Exchange org or something within Exchange is causing this.
Sure andy, i check the trace logs
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Hi @pavan kumar ,
when he is sending an email he is receiving an undeliverable email saying you dont have permissions to send.
As mentioned above by Andy, would you please remove the personal information and share the content of the underliverable email so that we can help you better?
What's the version of your Exchange?
If this is a recently occurred issue, have you made any changes to this user's mailbox before the problem started?
Please have a check in EAC via Mail Flow> delivery report by searching for one of the problematic messages and see if there would be any clues.
It's also suggested to go through the mail flow rules and check if there is any relevant rule which could cause this issue.
Any findings, please feel free to post back.
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Hi Pavan.
Just checked in to see if you have had a chance to see the replies above, Feel free to post back if you need further assistance on this.
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Hi yuki,
We have not made any changes to the user. it looks like the user is unable to send an email since Day 1 of his mailbox creation.
I have checked the mail flow delivery report i didnt find any clue. i have posted a NDR to andys message.
Thanks
Pavan.
Hi Pavan,
I did some research on the error code contained in the NDR and found this link which mentions the error code 550 5.7.1. The articles is intended for Exchange Online, but I assume that the section "Why did I get this bounce message?" can be applied to Exchange 2016 as well. Going through the possible causes listed, it seems that the third one could be the most possible factor in your situation. So agree with Andy that if you have any SMTP gateway set up in your environment, please check if the problematic user has been granted the permissions required.
As per the message trace, you may refer to the command below:
Get-TransportService | Get-MessageTrackingLog -MessageSubject <subject> -Sender <mailbox address> -Recipients <mailbox address> | select timestamp,EventID,Source,ConnectorID |sort-object Timestamp