3.248.150.22
ec2-3-248-150-22.eu-west-1.compute.amazonaws.com
34.242.72.47
ec2-34-242-72-47.eu-west-1.compute.amazonaws.com

europe.umuc.edu.s6a1.psmtp.com.
europe.umuc.edu.s6a2.psmtp.com.
europe.umuc.edu.s6b1.psmtp.com.
europe.umuc.edu.s6b2.psmtp.com.