Jean-François Guénet
asked on
Exchange 2016 BackScatter configuration
Hello im trying to configure my exchange 2016 server so it dont get BACKSCATTER
Ive done this on my server
Set-Remotedomain default -NDREnabled $true
Set-RecipientFilterConfig -RecipientValidationEnable d $true
and restart Transport Service
Now when im sending an email from gmail to an invalid email address test@xxx.xx ive got a reply from
Mail Delivery System <MAILER-DAEMON@xxx.xx>
10:01 AM (5 minutes ago)
to me
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
<test@xxx.xx>: host 192.168.xx.xx[192.168.xx.x x] said: 550 5.1.10
RESOLVER.ADR.RecipientNotF ound; Recipient not found by SMTP address lookup
(in reply to end of DATA command)
Is this a normal behavior ?
Should i not receive an email from GMAIl instead to notify me that the adress test@xxx.xx don't exist
Thanks for helping me
Ive done this on my server
Set-Remotedomain default -NDREnabled $true
Set-RecipientFilterConfig -RecipientValidationEnable
and restart Transport Service
Now when im sending an email from gmail to an invalid email address test@xxx.xx ive got a reply from
Mail Delivery System <MAILER-DAEMON@xxx.xx>
10:01 AM (5 minutes ago)
to me
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
<test@xxx.xx>: host 192.168.xx.xx[192.168.xx.x
RESOLVER.ADR.RecipientNotF
(in reply to end of DATA command)
Is this a normal behavior ?
Should i not receive an email from GMAIl instead to notify me that the adress test@xxx.xx don't exist
Thanks for helping me
ASKER
Im already setup like this
NDR was disable and i don't have problem with backscatter
SPF is already configured to accept only our IP
What im trying to do is configure exchange so when someone write an email to an unknown user they get the message from their server instead of mine. So ive read that you need to enable
Set-Remotedomain default -NDREnabled $true
Set-RecipientFilterConfig -RecipientValidationEnable d $true
With Set-RecipientFilterConfig -RecipientValidationEnable d $true the email should be reject and user should be notify by their mail server that the user is unknown
Thanks !
NDR was disable and i don't have problem with backscatter
SPF is already configured to accept only our IP
What im trying to do is configure exchange so when someone write an email to an unknown user they get the message from their server instead of mine. So ive read that you need to enable
Set-Remotedomain default -NDREnabled $true
Set-RecipientFilterConfig -RecipientValidationEnable
With Set-RecipientFilterConfig -RecipientValidationEnable
Thanks !
that is correct.
ASKER
But why if im sending an email from GMAIL to an unknown user in my organization that i don't receive a notification from GMAIL. Instead im receving a notification from my Exchange server and i don't want this
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ASKER
ha ok thanks fot the info
https://www.techieshelp.com/exchange-2013-how-to-disable-ndrs/