Bounce Back Distribtion Group


I've a problem with bounce back when i send a mail with a distribution group and the recipent address is faulse, i don't receive the bounce back.
technical context :
2 Exchange server 2016 standard without edge in DAG
Antispam Exchange ENABLED
my external mail are filtred by an antispam gateway

My antispam gateway send me the bounce back, my  server1 create event HARECEIVE the mail and create an event HADISCARD and the mail is DROP by the server1 or the server2.
do you have already meet this case ?

Thanks for your help!

vincent rabasteResponsable Système d'informationAsked:
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Gopi RajuSystem EngineerCommented:
Hello Vincent,

Are you using any spam filters?, if yes check the DG was added as functional account or as an alias on your spam filter.
Also try adding the DG to white list on your spam filter gateway.

G. Gopi Raju.
vincent rabasteResponsable Système d'informationAuthor Commented:
Hello Gopi Raju,

Thanks for your message.

I don't use a filter spams (exchange antispam is configured by default) also i add the domain who give me the bounce back in white list, but it doesn't work.
For more information, if i send a mail with my personnal address to a bad address, i receive the bounce back without problem.
So if i send with the DG (i'm member and owner) i never receive the bounce back.
I see in the log my external antispam gateway send me the bounce back and the mail is lost/drop beetwen my 2 servers.

I hope you understand me (my english is not realy good).


Gopi RajuSystem EngineerCommented:
Try checking the anti spam settings if you have access to it.
Also please let me know your DG email address so that i can check from outside if there is anything blocking it.
Also please verify the following article and try making changes.

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