[imp] Can't log in, wrong IP address in logs

[Simon Matthews]

I have one working installation of Horde 2.0, IMP 3.0 and am trying to set 
up another. I copied all the files from one machine to the other.

When I try to log in, however, it fails. In the log file, I notice 
that it quotes the wrong IP address. Could this be related? 

Here are examples:
from the "messages" log:
Jul 16 12:41:49 bastion2.coreel.com HORDE[4411]: [imp] FAILED LOGIN 
xx.xx.xx.82 to postoffice.paxonet.com:143[imap] as simon [on line 332 of 
"/home/httpd/html/horde/imp/lib/IMP.php"]

Now, from the "maillog":
Jul 16 12:41:49 coremail imapd[12404]: imap service init from 
xx.xx.xx.84
Jul 16 12:41:49 coremail imapd[12404]: Command stream end of file, while 
reading line user=??? host=UNKNOWN

Notice how one log gives the IP address as ending in '82' and the other 
ending in '84'? The '82' ip address is from the working machine. The '86' 
address if from the non-working machine.

I have tried to figure out what could cause the non-working horde 
installation to think its IP address is xx.xx.xx.82 without success. Can 
anyone give me any pointers?

Simon