I have never used Auto responder However I try to answer as follows.
1. Check the help menu in auto responder and check if there is any self test method is there and if available apply it.
2. Send email from your email id to the same id where you have set auto responder
3. Send email from alternate email id to auto responder email id
4.Change system date and then send mail to auto responder and check how it responds
5. Send 100 forwards to auto responder mail id
6. Select a spam mail that you received and forward it to auto responder.
7. Send a mail to auto responder having a url link attached in the mail body.
Check auto responder help , Check what it is supposed to perform in different conditions, create those conditions and test it.
I have never used Auto responder However I try to answer as follows.
1. Check the help menu in auto responder and check if there is any self test method is there and if available apply it.
2. Send email from your email id to the same id where you have set auto responder
3. Send email from alternate email id to auto responder email id
4.Change system date and then send mail to auto responder and check how it responds
5. Send 100 forwards to auto responder mail id
6. ...more