The POP command to send the password is PASS. I don't know why
the P would be missing. I've never seen this problem before.
As for +OK in the headers--- POP message retrieval looks like
this.
RETR 2
+OK 4598 octets
Received: from
foo.com by
bar.com
From: nobody
To: nobody
blah blah blah
.
So if you're seeing +OK in the headers, it means VM is not
skipping over the RETR response before copying out the message.
VM uses a marker to keep track of its position in the buffer that
contains the POP session stream. If this marker position is
getting corrupted or otherwise fiddled with, that would explain
the +OK in the headers. But it would not explain the PASS -> ASS
problem.