I have an e-mail account - signinproblems@upsu.net - which fires off an automagic reply to every e-mail it receives to say "thanks for getting in touch. We're lazy, so don't hold your breath waiting for a reply" (or words to that effect).

I've come home to find that someone has e-mailed us with an enquiry. Our automagic reply has then gone to their account, which has also - probably because they too are as bored as I was when I set up my auto-reply - fired off an auto-reply to my auto-reply to tell my auto-reply that the owner of the mailbox is very sorry, but he has a life thankyouverymuch, so he might take a while to reply.

... to which *my* inbox fired off an auto-reply, saying "thanks for getting in touch. We're lazy, so don't hold your breath waiting for a reply".

... which then received another "the owner of the mailbox is very sorry, but he has a life thankyouverymuch, so he might take a while to reply" message...

... and so-on.

This could take some time to fix...