On Thu, Jun 03, 2010 at 08:26:16PM +0200, Moe wrote:
> * Make sure /etc/hosts has something like:
> 127.0.0.1 tail.call tail
>
> * 'hostname' should return: tail
> * 'hostname -f' should now return: tail.call
> * 'postconf -d mydomain' will still return: localdomain
Which is correct behaviour. Here is the Postfix get_hostname() function, read
it carefully:
char namebuf[MAXHOSTNAMELEN + 1];
/*
* The gethostname() call is not (or not yet) in ANSI or POSIX, but it is
* part of the socket interface library. We avoid the more politically-
* correct uname() routine because that has no portable way of dealing
* with long (FQDN) hostnames.
*
* DO NOT CALL GETHOSTBYNAME FROM THIS FUNCTION. IT BREAKS MAILDIR DELIVERY
* AND OTHER THINGS WHEN THE MACHINE NAME IS NOT FOUND IN /ETC/HOSTS OR
* CAUSES PROCESSES TO HANG WHEN THE NETWORK IS DISCONNECTED.
*
* POSTFIX NO LONGER NEEDS A FULLY QUALIFIED HOSTNAME. INSTEAD POSTFIX WILL
* USE A DEFAULT DOMAIN NAME "LOCALDOMAIN".
*/
if (my_host_name == 0) {
/* DO NOT CALL GETHOSTBYNAME FROM THIS FUNCTION */
if (gethostname(namebuf, sizeof(namebuf)) < 0)
msg_fatal("gethostname: %m");
namebuf[MAXHOSTNAMELEN] = 0;
/* DO NOT CALL GETHOSTBYNAME FROM THIS FUNCTION */
if (valid_hostname(namebuf, DO_GRIPE) == 0)
msg_fatal("unable to use my own hostname");
/* DO NOT CALL GETHOSTBYNAME FROM THIS FUNCTION */
my_host_name = mystrdup(namebuf);
}
return (my_host_name);
--
Viktor.
