It's NOT a bug, but a feature with a wrong name.
Half a year ago I've had problems with this one. You have to use 'vacation messages' for it to work the way you want.
What it does is this:
(autoresponder)
1. Get mail, ignore all content
2. send back a mail containing the info that has been preprogrammed.
Use when:
* you need to send information to users that send an mail to a certain address ignoring mail content.
(vacation message)
1. Get mail
2. Send back message to sender
3. Put it in the incoming mailbox file
Use when:
* You want to send automated 'I received message'
* I am on vacation message
* I will read it when I get to it message
* I am going to change my e-mail address to xxxxx, this address will work until xxxxx message
So if you want to be able to read the mail send to it, use vacation message.
(Otherwise John should change the name/help for it, to make it a bit more clear).
Note: It doesn't matter if you use MailScanner/Clam or not in this case.
But now, i think antivirus en spamfilter (mailscanner) is not working anymore, in fact, i don't get reports.
Yeah, you disabled that by replacing your incomming config, it now sends directly to the mailbox, instead of to the MailScanner files (which send it through to the deliver system, which isn't used now anymore).