Postfix 2.1.5: problem with getnameinfo

[Andreas Vent-Schmidt <a.vent@procommerz.de>]

Hi everybody,

can anybody help me on this problem:

On a Debian "Woody" box (which is being updated periodically witch apt), 
I was willing to install postgrey from backports.org. So I added the 
appropriate "deb http://backports..."; lines to /etc/apt/sources.list.

Then I ran `apt-get install greylist`. Apt did complain on postfix being 
below 2.1. So I also added an "backports-postfix" entry to sources.list 
an updated postfix. This went fine, but: after restarting postfix I 
found in /var/log/mail.log:

################################ snip ##################################
Feb 15 18:14:09 www postfix/smtpd[20296]: fatal: smtpd_peer_init:
 numeric getnameinfo lookup for peer: error ai_family not supported
################################ snip ##################################

After this the smtp process died. On the client's side, this looked 
like: "server dropped connection" or so.
 
Can anybody tell me anything about this problem? Yes, I know that the 
reverse lookup of a connecting client failed, but I don't know why.

Google has no (matching) ideas...

Thanks a lot in advance and have a nice day,
Andreas

-- 
procommerz - Internet fuer Unternehmen
www.procommerz.de | 033925-90710