Yes, uaa.rochester.edu can receive emails.
Yes, uaa.rochester.edu seems to be a legitimate domain.
A record
None
MX records
ppmx1.its.rochester.edu.
128.151.57.241
ppmx2.its.rochester.edu.
128.151.57.242
ppmx3.its.rochester.edu.
128.151.57.243
ppmx4.its.rochester.edu.
128.151.57.244
ppmx5.its.rochester.edu.
128.151.24.33
ppmx6.its.rochester.edu.
128.151.24.34
ppmx7.its.rochester.edu.
128.151.24.35
ppmx8.its.rochester.edu.
128.151.24.28