Hi.  I need some help.  I've recently upgraded my mail server from  
NetBSD 2.1,
running sendmail 8.13.3 from pkgsrc; to running NetBSD 3.0 and sendmail
8.13.5 (from pkgsrc-2005Q4).  This is on a sparc64, in case that  
matters.

   Previously, I had configured my mail server to have an alternet  
address from
the main address of the host, both for IPv4 and IPv6.  I had  
configured the
DaemonPortOptions as:

O DaemonPortOptions=Name=MTA-v4, Family=inet, Addr=mail.distal.com
O DaemonPortOptions=Name=MTA-v6, Family=inet6, Addr=mail.distal.com

   and this worked just fine.  Now, when I start up sendmail, I get  
the following
error(s):

Jan 24 09:30:13 hostname sm-mta[8831]: starting daemon (8.13.5): SMTP 
+queueing@00:30:00
Jan 24 09:30:13 hostname sm-mta[8831]: NOQUEUE: SYSERR(root):  
opendaemonsocket: daemon MTA-v6: cannot bind: Invalid argument
Jan 24 09:30:13 hostname sm-mta[8831]: daemon MTA-v6: problem  
creating SMTP socket
Jan 24 09:30:13 hostname sm-mta[8831]: NOQUEUE: SYSERR(root):  
opendaemonsocket: daemon MTA-v6: server SMTP socket wedged: exiting

   It looks like resolution is doing the wrong thing somehow.  Not  
getting the
IPv6 address of "mail.distal.com", but perhaps getting the IPv4  
address, or
something else.

   What surprises me is that it did work, with a slightly earlier  
version of sendmail
on NetBSD 2.1 on the same machine, with the same config in DNS and on  
the
interfaces of the machine.

   Does anyone have any idea what's gone on here?

   If I insert the IPv6 address into the relevant line of sendmail.cf  
(instead of leaving
Addr=mail.distal.com), sendmail comes up and works just fine.  So,  
it's clearly
some sort of resolution problem...

   Thanks.  Let me know if you have any ideas or suggestions...

                                          - Chris