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Hi
We are currently in the process of moving to Business Central and are finding issues with sending email out to external clients getting the below message
SMTP returned error. 550 5.7.64 TenantAttribution; Relay Access Denied
We have other devices and servicedesks that use our connector without any issues sending to external emails
We use port 25 and the Anonymous and (ourdomain).mail.protection.outlook.com
Hi Wacar ,
please follow the below link, see if you can take any idea.
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André Arnaud de Cal...
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