Forum Discussion
External client SMTP Relay with group alias in From address field -- fails to send
Hi TheCoreSquirrel,
Based on your scenario the best option is to implement "Option 3" on the following article https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/how-to-set-up-a-multifunction-device-or-application-to-send-email-using-office-3
For best security, please implement on your firewall that only your inventory system can contact Office 365 in port 25 or required servers.
Best regards,
Nuno Árias Silva
Hi TheCoreSquirrel,
Based on your scenario the best option is to implement "Option 3" on the following article https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/how-to-set-up-a-multifunction-device-or-application-to-send-email-using-office-3
For best security, please implement on your firewall that only your inventory system can contact Office 365 in port 25 or required servers.
Best regards,
Nuno Árias Silva
Thanks very much, I will pass this along to our IT Admin and reply with the results; this sounds right to me though, so I hope it'll work.