I have the same problem, and I've forgotten my Livejournal password, so I'm in rather of a pinch..
Here's what happens:
the forwarding email in question is
livejournal.20.thecyclops@samgourmet.com (there's plenty of remaining emails)
*if I send an email from either gmail or my own private email to that spamgourmet address, it goes through fine.
*If I request a password change from livejournal, it sends an email (the counters go down), but I never receive it, regardless of where I have spamgourmet forward the emails (gmail or my private email).
*if I make a new livejournal account and use a gmail account as my email address, the message goes through fine
So, the following communication channels work (note: spamgourmet referes to
livejournal.20.thecyclops@samgourmet.com):
Livejournal to gmail
PrivateEmail to spamgourmet to gmail
gmail to spamgourmet to privateemail
But this fails:
Livejoural to spamgourmet to gmail
livejournal to spamgourmet to privateemail
As far as I have noticed, all my other disposable addresses forward fine. So if this is a junkmail filter downstream of spamgourmet, it should either block emails directly from livejournal, or block the other spamgourmet emails, but that is not the case.
Since the spamgourmet counters decrement properly, it looks like it is receiving the livejournal emails. My guess is that there is something on the outgoing spamgourmet mail server that is blocking these emails.