A company uses Exchange Online.
The company configures an SMTP relay device. Users report they are unable to send email through the relay device.
You need to ensure that the relay device can send email by using SMTP AUTH.
Which two actions should you perform? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
A. Instruct users to specify a different email address when sending email.
B. Configure the network firewall to allow traffic on port 443.
C. Configure a licensed Microsoft 365 mailbox on the relay device.
D. Configure the network firewall to allow traffic on port 587.
