Server error: '550 5.7.54 SMTP; Unable to relay recipient in non-accepted

error screen shoterror screen shoterror screen shoterror screen shoti am unable to send mail out side from my exchange server 2016 i have attached the snapshot of the error can any one provide me the solution??
faizan sohailAsked:
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Sam Simon NasserIT Support ProfessionalCommented:
no attachments! check again
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systechadminConsultantCommented:
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Valentina PerezExchange ServersCommented:
Hi Faizan,

Have you created the send connector to allow all the domains?

Check if your send connector is correctly configured?

Are you using Mx record or smarthost?

Regards
Valentina
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faizan sohailAuthor Commented:
Hi Valentina,

yes i have created send connector and allowed all domains.

i am using MX record.


Faizan
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Valentina PerezExchange ServersCommented:
HI Faizan,

It seems that you have configured external relay?

Please be sure that you configure the relay with the following settings

https://practical365.com/exchange-server/exchange-2016-smtp-relay-connector/

Regards
Valentina
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Valentina PerezExchange ServersCommented:
No more replies from the author...the issue seems to be solved
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