>> If I send an email to a certain gmail address, then I get an >> autoresponse. This is good. :) > I'm pretty sure it's going to be because it's not to a gmail account. No, if I email directly to this Google App account then it works fine--that's what I meant by that first line above. I see my letter wasn't so clear, but the short version is: If I emailed directly to the account it works, if I do it via php mail, it fails. Thanks.