so, in the session variable dump, I see the following error response:
["waue_contactus_1_Log"]=>
string(192) "Sending To: test@test.com; php@net100.co.uk... 10001 - Failed to connect to auth.smtp.1and1.co.uk:25 [SMTP: Failed to connect socket: Connection refused (code: -1, response: )] - Failure
"
this means that the auth.smtp.1and1.co.uk is rejecting the User Name and password you are entering. Double check that you have the correct username and password for connecting to the auth.smtp.1and1.co.uk server.