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--- postfix-2.0.9/src/util/get_hostname.c.orig 2003-04-28 13:15:08.000000000 +0200
+++ postfix-2.0.9/src/util/get_hostname.c 2003-04-28 13:36:47.000000000 +0200
@@ -33,6 +33,7 @@
#include <sys/param.h>
#include <string.h>
#include <unistd.h>
+#include <netdb.h>
#if (MAXHOSTNAMELEN < 256)
#undef MAXHOSTNAMELEN
@@ -55,6 +56,7 @@
const char *get_hostname(void)
{
char namebuf[MAXHOSTNAMELEN + 1];
+ struct hostent *hp;
/*
* The gethostname() call is not (or not yet) in ANSI or POSIX, but it is
@@ -66,9 +68,11 @@
if (gethostname(namebuf, sizeof(namebuf)) < 0)
msg_fatal("gethostname: %m");
namebuf[MAXHOSTNAMELEN] = 0;
- if (valid_hostname(namebuf, DO_GRIPE) == 0)
+ if (!(hp = gethostbyname(namebuf)))
+ msg_fatal("gethostbyname(\"%s\") does not resolve as a fully qualified domain name.", namebuf);
+ if (valid_hostname(hp->h_name, DO_GRIPE) == 0)
msg_fatal("unable to use my own hostname");
- my_host_name = mystrdup(namebuf);
+ my_host_name = mystrdup(hp->h_name);
}
return (my_host_name);
}
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