oldbloke's mutterings

I have a script that runs every 6 minutes, pop3's to a mail server, grabs all the waiting mail for a certain user, does various checks on the headers and body and sends one of a variety of replies depending on what it found.

Now, most spam gets a reply mentioning that the Subject didn't include the required phrase, and that's the end of it.

But at about 23:00 last night, postmaster@namdeletedtoprotectthenumpty sent an Undeliverable response to one of those.

Of course, the script sent a Bad Subject response to that, and guess what?

postmaster@ is Undeliverable too.

So they've been pingponging mails every 6 minutes since. I suppose I ought to break the cycle at some point. Next week maybe.

It irks me somewhat that I can get mail from postmaster@ but not reply to postmaster@, though.
I may do a lookup and find out somebody I can moan at.