emailAddress 1.3.6.1.4.1.19046.11.1.8.3.4

The email of the contact person. It must contain '@' and dot '.' in form userid@hostname (240 characters maximum). The userid can be alphanumeric characters, '.', '-', or '_' and be 64 characters maximum.The hostname can be alphanumeric characters, '.', '-', or '_'. It must contain at least two domain items.